Podcast
Questions and Answers
A mass m is attached to a thin wire and whirled in a vertical circle. The wire is most likely to break when the mass is at the ______ point.
A mass m is attached to a thin wire and whirled in a vertical circle. The wire is most likely to break when the mass is at the ______ point.
lowest
When a block of mass M is suspended by a long wire of length L, the length of the wire becomes (L+I). The ______ potential energy stored in the extended wire is: $Mgl$
When a block of mass M is suspended by a long wire of length L, the length of the wire becomes (L+I). The ______ potential energy stored in the extended wire is: $Mgl$
elastic
Ionized hydrogen atoms and α-particles with the same momenta enter perpendicular to a constant magnetic field, B. The ratio of their radii of their paths $r_H : r_\alpha$ will be: ______
Ionized hydrogen atoms and α-particles with the same momenta enter perpendicular to a constant magnetic field, B. The ratio of their radii of their paths $r_H : r_\alpha$ will be: ______
2:1
Body A of mass 4m moving with speed u collides with another body B of mass 2m, at rest. The collision is head on and elastic in nature. After the collision the fraction of energy lost by the colliding body A is: ______
Body A of mass 4m moving with speed u collides with another body B of mass 2m, at rest. The collision is head on and elastic in nature. After the collision the fraction of energy lost by the colliding body A is: ______
In a double slit experiment, when light of wavelength 400 nm was used, the angular width of the first minima formed on a screen placed 1 m away, was found to be 0.2°. If the entire experimental apparatus is immersed in water, the angular width of the first minima will be approximately: ______°. (μwater = 4/3)
In a double slit experiment, when light of wavelength 400 nm was used, the angular width of the first minima formed on a screen placed 1 m away, was found to be 0.2°. If the entire experimental apparatus is immersed in water, the angular width of the first minima will be approximately: ______°. (μwater = 4/3)
In which of the following devices, the eddy current effect is ______? Induction furnace
In which of the following devices, the eddy current effect is ______? Induction furnace
A soap bubble, having a radius of 1 mm, is blown from a detergent solution having a surface tension of $2.5 \times 10^{-2}$ N/m. The pressure inside the bubble equals at a point Zo below the free surface of water in a container. Taking g=10 m/s², density of water = $10^3$ kg/m³, the value of Zo is: ______ cm
A soap bubble, having a radius of 1 mm, is blown from a detergent solution having a surface tension of $2.5 \times 10^{-2}$ N/m. The pressure inside the bubble equals at a point Zo below the free surface of water in a container. Taking g=10 m/s², density of water = $10^3$ kg/m³, the value of Zo is: ______ cm
Which color of light has the longest ______? Red
Which color of light has the longest ______? Red
A disc of radius 2 m and mass 100 kg rolls on a horizontal floor. Its centre of mass has a speed of 20 cm/s. How much work is needed to stop it? ______ J
A disc of radius 2 m and mass 100 kg rolls on a horizontal floor. Its centre of mass has a speed of 20 cm/s. How much work is needed to stop it? ______ J
The displacement of a particle executing simple harmonic motion is given by $y = A_0 + A\sin(\omega t) + B\cos(\omega t)$. Then the amplitude of its oscillation is given by: ______
The displacement of a particle executing simple harmonic motion is given by $y = A_0 + A\sin(\omega t) + B\cos(\omega t)$. Then the amplitude of its oscillation is given by: ______
Two similar thin equi-convex lenses, of focal length f each, are kept coaxially in contact with each other such that the focal length of the combination is $F_1$. When the space between the two lenses is filled with glycerin then the equivalent focal length is $F_2$. The ratio $F_1 : F_2$ will be: ______
Two similar thin equi-convex lenses, of focal length f each, are kept coaxially in contact with each other such that the focal length of the combination is $F_1$. When the space between the two lenses is filled with glycerin then the equivalent focal length is $F_2$. The ratio $F_1 : F_2$ will be: ______
Increase in temperature of a gas filled in a container would lead to increase in its ______ energy.
Increase in temperature of a gas filled in a container would lead to increase in its ______ energy.
An electron is accelerated through a potential difference of 10,000 V. Its de Broglie wavelength is, (nearly): (m=9×10-31 kg) ______
An electron is accelerated through a potential difference of 10,000 V. Its de Broglie wavelength is, (nearly): (m=9×10-31 kg) ______
A copper rod of 88 cm and an aluminum rod of unknown length have their increase in length independent of increase in temperature. The length of aluminium rod is: (αCu = 1.7 × 10^-5 K^-1 and αAl = 2.2 × 10^-5 K^-1 ). ______
A copper rod of 88 cm and an aluminum rod of unknown length have their increase in length independent of increase in temperature. The length of aluminium rod is: (αCu = 1.7 × 10^-5 K^-1 and αAl = 2.2 × 10^-5 K^-1 ). ______
Pick the wrong answer in the context with the rainbow, An observer can see a rainbow when his ______ is towards the Sun.
Pick the wrong answer in the context with the rainbow, An observer can see a rainbow when his ______ is towards the Sun.
A body weighs 200 N on the surface of the earth. How much will it weigh half way down to the center of the earth?. ______
A body weighs 200 N on the surface of the earth. How much will it weigh half way down to the center of the earth?. ______
Six similar bulbs are connected as shown in the figure with a DC source of emf E, and zero internal resistance. The ratio of power consumption by the bulbs when (i) all are glowing and (ii) in the situation when two from section A and one from section B are glowing, will be : ______.
Six similar bulbs are connected as shown in the figure with a DC source of emf E, and zero internal resistance. The ratio of power consumption by the bulbs when (i) all are glowing and (ii) in the situation when two from section A and one from section B are glowing, will be : ______.
Average velocity of a particle executing SHM in one complete vibration is: ______.
Average velocity of a particle executing SHM in one complete vibration is: ______.
The unit of thermal conductivity is: ______.
The unit of thermal conductivity is: ______.
A solid cylinder of mass 2 kg and radius 4 cm is rotating about its axis at the rate of 3 rpm. The torque required to stop it after 2 revolutions is: ______ Nm
A solid cylinder of mass 2 kg and radius 4 cm is rotating about its axis at the rate of 3 rpm. The torque required to stop it after 2 revolutions is: ______ Nm
A force F = 20+10y acts on a particle in the y-direction where F is in newton and y in meter. Work done by this force to move the particle from y=0 to y=1 m is : ______ J.
A force F = 20+10y acts on a particle in the y-direction where F is in newton and y in meter. Work done by this force to move the particle from y=0 to y=1 m is : ______ J.
Which of the following acts as a circuit protection device?. ______
Which of the following acts as a circuit protection device?. ______
When a particle is connected circuits and is exposed to the electricity then the one thing that acts and save is ______.
When a particle is connected circuits and is exposed to the electricity then the one thing that acts and save is ______.
A hollow metal sphere of radius R is uniformly charged. The electric field due to the sphere at a distance r from the centre: zero as r increases for r < R, ______ increases as r increases for r > R
A hollow metal sphere of radius R is uniformly charged. The electric field due to the sphere at a distance r from the centre: zero as r increases for r < R, ______ increases as r increases for r > R
For the reaction 2Fe^3+ (aq) + 2I^−(aq) ⟶ 2Fe^2+ (aq) + I2 (aq), E°cell = 0.24 V at 298 K. The value of ΔG° of the cell reaction is ______ kJ mol^-1. (Given: Faraday constant F = 96500 C mol^-1)
For the reaction 2Fe^3+ (aq) + 2I^−(aq) ⟶ 2Fe^2+ (aq) + I2 (aq), E°cell = 0.24 V at 298 K. The value of ΔG° of the cell reaction is ______ kJ mol^-1. (Given: Faraday constant F = 96500 C mol^-1)
The most suitable reagent for the following conversion, is :H3C-C≡C-CH3 → cis-2-butene ______
The most suitable reagent for the following conversion, is :H3C-C≡C-CH3 → cis-2-butene ______
α-particle consists of: ______
α-particle consists of: ______
A particle moving with velocity $\vec{v}$ is acted by three forces shown by the vector triangle PQR. The velocity of the particle will ______
A particle moving with velocity $\vec{v}$ is acted by three forces shown by the vector triangle PQR. The velocity of the particle will ______
Two particles A and B are moving in uniform circular motion in concentric circles of radii $r_A$ and $r_B$ with speed $v_A$ and $v_B$ respectively. Their time period of rotation is the same. The ratio of angular speed of A to that of B will be ______.
Two particles A and B are moving in uniform circular motion in concentric circles of radii $r_A$ and $r_B$ with speed $v_A$ and $v_B$ respectively. Their time period of rotation is the same. The ratio of angular speed of A to that of B will be ______.
A block of mass 10 kg is in contact against the inner wall of a hollow cylindrical drum of radius 1 m. The coefficient of friction between the block and the inner wall of the cylinder is 0.1. The minimum angular velocity needed for the cylinder to keep the block stationary when the cylinder is vertical and rotating about its axis, will be: (g = 10 m/s²). ______ rad/s
A block of mass 10 kg is in contact against the inner wall of a hollow cylindrical drum of radius 1 m. The coefficient of friction between the block and the inner wall of the cylinder is 0.1. The minimum angular velocity needed for the cylinder to keep the block stationary when the cylinder is vertical and rotating about its axis, will be: (g = 10 m/s²). ______ rad/s
Two parallel infinite line charges with linear charge densities +λ C/m and -λ C/m are placed at a distance of 2R in free space. What is the electric field mid-way between the two line charges? ______ $N/C$
Two parallel infinite line charges with linear charge densities +λ C/m and -λ C/m are placed at a distance of 2R in free space. What is the electric field mid-way between the two line charges? ______ $N/C$
Two point charges A and B, having charges +Q and -Q respectively, are placed at certain distance apart and force acting between them is F. If 25% charge of A is transferred to B, then force between the charges becomes: ______ F
Two point charges A and B, having charges +Q and -Q respectively, are placed at certain distance apart and force acting between them is F. If 25% charge of A is transferred to B, then force between the charges becomes: ______ F
A small hole of the area of cross-section $2 mm^2$ is present near the bottom of a fully filled open tank of height 2 m. Taking g = 10 m/s^2, the rate of flow of water through the open hole would be nearly: ______ $m³/s$.
A small hole of the area of cross-section $2 mm^2$ is present near the bottom of a fully filled open tank of height 2 m. Taking g = 10 m/s^2, the rate of flow of water through the open hole would be nearly: ______ $m³/s$.
A 800 turn coil of effective area 0.05 $m^2$ is kept perpendicular to a magnetic field $5 \times 10^{-5}$ T. When the plane of the coil is rotated by 90° around any of its coplanar axis in 0.1 s, the emf induced in the coil will be : ______ V
A 800 turn coil of effective area 0.05 $m^2$ is kept perpendicular to a magnetic field $5 \times 10^{-5}$ T. When the plane of the coil is rotated by 90° around any of its coplanar axis in 0.1 s, the emf induced in the coil will be : ______ V
The radius of the circle, the period of revolution, initial position and sense of revolution are indicated in the fig. y-projection of the radius vector of rotating particle P is: y(t) = 3 cos(πt/2) ,where y in ______
The radius of the circle, the period of revolution, initial position and sense of revolution are indicated in the fig. y-projection of the radius vector of rotating particle P is: y(t) = 3 cos(πt/2) ,where y in ______
Which of the following is a commercial blood cholesterol lowering agent?. ______
Which of the following is a commercial blood cholesterol lowering agent?. ______
The concept of Omnis cellula-e cellula regarding cell division was first proposed by. ______
The concept of Omnis cellula-e cellula regarding cell division was first proposed by. ______
Flashcards
Test Booklet Instructions
Test Booklet Instructions
Do not open the test booklet until instructed. Follow back cover instructions.
Test Duration and Marks
Test Duration and Marks
3 hours; 180 questions; 4 marks per correct answer, -1 for incorrect; max 720 marks.
Permitted Pen
Permitted Pen
Use blue/black ballpoint pen.
Rough Work Location
Rough Work Location
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After the Test
After the Test
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Booklet and Sheet Codes
Booklet and Sheet Codes
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Answer Sheet Handling
Answer Sheet Handling
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Elastic Potential Energy in Wire
Elastic Potential Energy in Wire
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Wire Breaks in Circle
Wire Breaks in Circle
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Radii Ratio: H to Alpha
Radii Ratio: H to Alpha
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Fraction Energy Lost (Collision)
Fraction Energy Lost (Collision)
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Angular Width - Immersion
Angular Width - Immersion
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Eddy Current Usage
Eddy Current Usage
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Bubble's value
Bubble's value
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Longest Wavelength Color
Longest Wavelength Color
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Work - Stopped Disc
Work - Stopped Disc
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Oscillation Amplitude Formula
Oscillation Amplitude Formula
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Ratio Lenses
Ratio Lenses
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Increase Temp Gas
Increase Temp Gas
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De Broglie Wavelength
De Broglie Wavelength
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Relation Copper Rod
Relation Copper Rod
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Rainbow: Reflection
Rainbow: Reflection
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Body Weight: Surface:Earth
Body Weight: Surface:Earth
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Power Consumption: Ratio
Power Consumption: Ratio
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semiconductor statements
semiconductor statements
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Average velocity particle
Average velocity particle
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Thermal Conductivity: Unit
Thermal Conductivity: Unit
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Solid cylinder Torque
Solid cylinder Torque
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Y Direction force
Y Direction force
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Circuit Protection
Circuit Protection
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Voltmeter's, Ammeter's
Voltmeter's, Ammeter's
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Hollow field
Hollow field
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dip, in (B) = -(25^(@)).
dip, in (B) = -(25^(@)).
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kinetic and potential energies
kinetic and potential energies
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Internal refraction
Internal refraction
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Study Notes
Exam Instructions and Guidelines
- The answer sheet is inside the test booklet, to be removed and filled with a blue/black ballpoint pen upon instruction to open the booklet.
- The exam duration is 3 hours, comprising 180 questions, each worth 4 marks, with a deduction of 1 mark for each incorrect answer. The maximum score is 720.
- Usage of blue/black ball point pen is allowed for filling details and marking responses.
- Rough work to be done in the designated space within the test booklet only.
- Answer sheet must be handed over to the invigilator before leaving the exam hall and candidates can take away the question paper
- The code on the booklet (P1) and the answer sheet must match, discrepancy to be reported to invigilator to replace both.
- Answer sheet should not be folded or have stray marks, Roll number to be written only in the specified areas, and use of white fluid for correction is not allowed.
- In case of any ambiguity in translation of any question, English version shall be treated as final.
Physics
- Elastic potential energy in an extended wire: When a block of mass M is suspended by a wire of length L that extends by l, the elastic potential energy stored is Mgl/2.
- Breaking point of a wire in vertical circular motion: A wire with a mass m attached, whirled in a vertical circle, is most likely to break when the mass is at the lowest point
- Ratio of radii of paths for ionized particles in a magnetic field: For ionized hydrogen atoms and alpha particles with the same momentum entering a constant magnetic field B, the ratio of their radii rH : ra will be 2:1.
- Energy loss in elastic collision: In a head-on elastic collision of a body A of mass 4m with a body B of mass 2m at rest, the fraction of energy lost by A is 8/9.
- Angular width of first minima in water: The angular width of the first minima in a double-slit experiment with underwater apparatus, using light of 400 nm, is found to be 0.15°.
- Eddy current applications: Eddy current effect is not used in electric heaters.
- Pressure inside a soap bubble:
- Surface tension considerations determine pressure. For a soap bubble of radius 1 mm formed with a solution having a surface tension of 2.5 × 10⁻² N/m, the additional pressure inside equals the pressure at a depth of 0.5 cm below water surface.
- Highest wavelength of light: Red light has the longest wavelength.
- Work needed to stop a rolling disc: A rolling disc of mass 100 kg and radius 2 m, with a center of mass speed of 20 cm/s, requires 3 J of work to be stopped.
- Resultant amplitude in Simple harmonic motion: If the displacement of a particle in SHM is given by y = A₀ + A sin ωt + B cos ωt, the amplitude of oscillation is √(A² + B²).
- Focal length of lenses in contact: Two identical thin equiconvex lenses in contact have a combined focal length of F₁. With glycerin (μ = 1.5) in the space between, equivalent focal length becomes F₂. The ratio F₁ : F₂ is 1:2.
- Effect of temperature increase on gas: Increasing the temperature of a gas in a container increases its kinetic energy.
- De Broglie wavelength of accelerated electron: An electron accelerated through 10,000 V has a de Broglie wavelength of approximately 12.2 × 10⁻¹² m.
- Increase in length of rods: For a copper rod of length 88 cm and aluminium rod of unknown length to maintain a constant difference in lengths regardless of temperature increase, the length of the aluminium rod is 68 cm.
- Rainbow context : An observer can see a rainbow when his front is towards the sun is a wrong statement.
- Weight at half the radius: The weight of a body 200 N on Earth's surface will be 100 N if taken half way down to the Earth's center.
- Power consumption with bulbs : Six bulbs are connected as shown in the figure with a DC source of emf E, and zero internal resistance. The ratio of power consumption by the bulbs when (i) all are glowing and (ii) in the situation when two from section A and one from section B are glowing, will be 9:4 .
- Semiconductors: Holes are the majority carriers and trivalent atoms are the dopants in p-type semiconductors.
- Average velocity of a particle exectuing SHM: Average velocity of a particle executing SHM in one complete vibration is zero.
- Thermal conductivity unit: The unit of thermal conductivity is Wm⁻¹K⁻¹.
- Torque to stop a rotating cylinder: The torque required to stop a solid cylinder of mass 2 kg and radius 4 cm rotating at 3 revolutions per minute (rpm) after 2 revolutions (rotations) is 2×10⁻⁶ Nm.
- Work done by a force: Work done by a force F = 20+10y (in newtons) acting on a particle in the y-direction to move the particle from y=0 to y=1 m is 25 J.
- Circuit protection: A fuse acts as a circuit protection device.
- Voltmeters and Ampmeters in circuits: V2 > V1 and i1 > i2.
- Electric field due to a spherical charge: When a hollow metal sphere of radius R is uniformly charged, the electric field due to the sphere at a distance r from the center increases as r increases for r < Rend for.
- Angle of dip: A and B are both located in the northern hemisphere.
- The relation between total energy, kinetic energy and potential energy: In an atom,The total energy of an electron is -3.4 eV then its kinetic and potential energies are 3.4 eV and -6.8eV respectively.
- Angles of incidence and and refraction : The work done by the gas is30J.
- α-particle:α-particle consists of2 protons and 2 neutrons only.
- Swimming velocity related problems: 30° west.
- Three forces acting on a particle and the relation to its motion with some velocity: remain constant.
- Ratio of angular speeds:
- Cylinder in contact against the inner wall rotating:
- Linear charge densities: zero.
- Two points which have charges:
Chemistry
- Green house gas is not: Among the following, the one that is not agreen house gas is sulphur dioxide.
- Sponteneity of a reaction: Given that Faraday constant F =96500 C mol-1 then the ΔrG = -46.32 kJ mol-1.
- Catalyst in biochemical reactions: Among the following, Enzymes that utilize ATP in phosphate transfer require an alkaline earth metal (M) as the cofactor then M is :Mg.
- Reagents in chemistry: To covert a H3C-C=C-CH3 → cis-2-butene then the The most suitable reagent is H₂, Pd/C, quinoline.
- Stability of compounds: Among the following the correct Increase in temperature:Li < Be < B < C < O < N < F < Ne .
- Biodegradable compounds : Among the following the biodegradable polymer is nylon 2-nylon 6.
- Structures in chemistry: The correct structure of tribromooctaoxide is.
- Reactions: For 4d, 5p, 5f and 6p orbitals that are arranged in the order of decreasing energy is 5f>6p>5p>4d .
- Relationship with compounds: Select the correct option which is (a) and (b) only.
- Constant pressure :Under isothermal condition, a gas constant pressure of 2bar then the value is 30J.
- Functional groups in Compounds is:Among the functional groups Among the following, the one that is not a green house gas is:sulfur dioxide.
- Formulae: For the cell reaction 2Fe+3(aq) + 2I-(aq) → 2Fe+2(aq) + I2(aq) given cell = 0.24V at 298 K. The standard Gibbs energy G of the cell reaction is:-46.32.
- Catalysis:H2. Pd/C. quinolineis Most suitable reagent for the following conversion.
- Thermochemistry correct is H2Po < H2Te<H2Se < H₂S less-than H2O.
- Correct statements among the following is 5f and 6p is greate than 5p greater than 4d.
- Reactions and its conditions in chemistry are a and b is the correct answer among the followin.
- Lequal mass: =30J.
- Isomerism: A is 0-CH2CH3
- Structures related questions can be easily found, where CH3H2C- C-0-0- H
- Relation between O and N are 0=Br-Br-Br=0
- The formula and mechanism relation questions can be found,the correct option isnylon 2 and nylon 6
- Physical and chemical properties A can see a rainbow when his front is towards the sun.
- Ionic nature are electrons are the majority carriers and trivalent atoms are the dopants.
- Ionic representation withSix bulbs are connected as shown in the figure with a DC source of emf E, and zero internal resistance. The ratio of power consumption by the bulbs when (i) all are glowing and (ii) in the situation.
- In the power formula the final answer is . Wm-1 K-1
- In electronics there is the fuse . in the circuits are V2 > V1 and i1 > i2.
- Spherical nature: increases as r increases for r < Rand fort > R
- Total energy is:. 3.4 eV. Its kinetic and potential energies are, respectivély3.4 eV, -6.8 eV
- Red colour:The work done to raise a mass m from the surface of the earth to a height h, which is equal to the radius of the earth, is 32mgR
- Alpa particle:1:√2
- About a double bond: a.d linear.
- Charge: 4:9
- Types:30° west
- Vector and triangles: remain constant
- Radio waves is .9.
Biology
- A: Coliform - I Relation1. Most suitable.
- A:Coliforum - 1 structure.
- Structures relations: a.e most preferrable is .0 × 102
- P-P reaction in 1800 the first structure that has a high potential will work : Treamitide.
- In which of the conditions well there B.
- Types of function in 3 functions will well and they both work.
- A B are the related formulasA2 and root c the more uitable a will the high with the best functions.
- A functional question.
- Types of function A a .D related to.
- The function will not increase the number: And its an increase in the number of cells 4.
- Type if vector functions with all angles in it.
- H2A can also be done under the reaction of and 3/2
- Structure and functional relations: A4
- And all will funtion under all .
- The A - 1 relation 3 : And that well be there from the a D related with those functional cells.
- Relation with 4 with there 2 functional and all angles in it.
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