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Questions and Answers
What is the ratio of thermal energy released in resistors R and 3R connected in series?
What is the ratio of thermal energy released in resistors R and 3R connected in series?
What phenomenon occurs when a beam of white light passes through a convex lens and different colors converge at different points?
What phenomenon occurs when a beam of white light passes through a convex lens and different colors converge at different points?
If the magnetic field in a conducting loop is decreased to zero in a specific time, which physical law is primarily observed?
If the magnetic field in a conducting loop is decreased to zero in a specific time, which physical law is primarily observed?
In a velocity-time graph showing uniform acceleration, what does a straight line indicate?
In a velocity-time graph showing uniform acceleration, what does a straight line indicate?
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What is the unit of the magnetic field strength in the formula for a magnetic field?
What is the unit of the magnetic field strength in the formula for a magnetic field?
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What value of the magnetic field is given when the conducting loop is perpendicular to the field?
What value of the magnetic field is given when the conducting loop is perpendicular to the field?
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In the context of thermal energy in resistors, what does a higher resistance imply?
In the context of thermal energy in resistors, what does a higher resistance imply?
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Which law relates current flowing through a conductor to the potential difference across it?
Which law relates current flowing through a conductor to the potential difference across it?
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Which particle has the longest De-Broglie wavelength when an -particle, a proton, and an electron have the same kinetic energy?
Which particle has the longest De-Broglie wavelength when an -particle, a proton, and an electron have the same kinetic energy?
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In the arrangement with a small circular loop of wire inside a large square loop, what is the expression for mutual inductance?
In the arrangement with a small circular loop of wire inside a large square loop, what is the expression for mutual inductance?
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When comparing the De-Broglie wavelengths of an electron, proton, and an -particle of the same kinetic energy, which conclusion is valid?
When comparing the De-Broglie wavelengths of an electron, proton, and an -particle of the same kinetic energy, which conclusion is valid?
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What is the shape of the area surface in which a charge q is placed in a cuboid of dimensions 2L × 2L × L?
What is the shape of the area surface in which a charge q is placed in a cuboid of dimensions 2L × 2L × L?
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If the radius of a small circular loop is R and it is placed inside a large square loop, which statement is true regarding their centers?
If the radius of a small circular loop is R and it is placed inside a large square loop, which statement is true regarding their centers?
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In terms of mass, which particle has the highest mass among an -particle, a proton, and an electron?
In terms of mass, which particle has the highest mass among an -particle, a proton, and an electron?
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What is the area of the surface 'S' where charge q is located in a cuboid with dimensions 2L × 2L × L?
What is the area of the surface 'S' where charge q is located in a cuboid with dimensions 2L × 2L × L?
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Among the particles mentioned, which one has the smallest De-Broglie wavelength when they possess the same kinetic energy?
Among the particles mentioned, which one has the smallest De-Broglie wavelength when they possess the same kinetic energy?
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What is the ratio of kinetic energy of the stone at the point of projection to its kinetic energy at the highest point of flight?
What is the ratio of kinetic energy of the stone at the point of projection to its kinetic energy at the highest point of flight?
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What is the potential difference reading on the voltmeter connected across each resistor in a series circuit with two 100 Ω resistors and a 270 V source?
What is the potential difference reading on the voltmeter connected across each resistor in a series circuit with two 100 Ω resistors and a 270 V source?
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What is the approximate maximum speed of a car on a curved road of radius 50 m with a friction coefficient of 0.512?
What is the approximate maximum speed of a car on a curved road of radius 50 m with a friction coefficient of 0.512?
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Which monochromatic radiation will cause photoelectrons to be emitted from a material with a threshold wavelength of 5500 Å?
Which monochromatic radiation will cause photoelectrons to be emitted from a material with a threshold wavelength of 5500 Å?
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When 3.4 V is connected across a uniform metallic wire carrying a current of 1 A, what is the length of the wire given its mass and density?
When 3.4 V is connected across a uniform metallic wire carrying a current of 1 A, what is the length of the wire given its mass and density?
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In an electrical circuit with a voltmeter across resistors, what is the purpose of the voltmeter?
In an electrical circuit with a voltmeter across resistors, what is the purpose of the voltmeter?
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What occurs to the kinetic energy of a stone as it reaches the highest point in its flight?
What occurs to the kinetic energy of a stone as it reaches the highest point in its flight?
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If a source has an emf of 270 V, what is the total potential difference across two 100 Ω resistors in series?
If a source has an emf of 270 V, what is the total potential difference across two 100 Ω resistors in series?
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What is the phase difference between two simple harmonic waves with equal amplitudes and resultants of 4 cm?
What is the phase difference between two simple harmonic waves with equal amplitudes and resultants of 4 cm?
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If the initial pressure in a tyre is 270 kPa at 27ºC, what will be the approximate pressure when the temperature increases to 37ºC?
If the initial pressure in a tyre is 270 kPa at 27ºC, what will be the approximate pressure when the temperature increases to 37ºC?
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What is the total energy released if all the atoms in 60g of pure 240X undergo fission, given the energy released per fission is 200 MeV?
What is the total energy released if all the atoms in 60g of pure 240X undergo fission, given the energy released per fission is 200 MeV?
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When two objects are projected at angles α and β such that α + β = 90°, what is the ratio of their horizontal ranges?
When two objects are projected at angles α and β such that α + β = 90°, what is the ratio of their horizontal ranges?
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What is the amplitude of the periodic motion represented by the equation Y = sin ωt + cos ωt?
What is the amplitude of the periodic motion represented by the equation Y = sin ωt + cos ωt?
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What is the value of x in the ratio of IAB to ICM if IAB is the moment of inertia about an axis AB and ICM is about a CM?
What is the value of x in the ratio of IAB to ICM if IAB is the moment of inertia about an axis AB and ICM is about a CM?
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What happens to the energy released per fission if the nuclei of different isotopes undergo the same fission reaction?
What happens to the energy released per fission if the nuclei of different isotopes undergo the same fission reaction?
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If two waves have equal amplitudes and the resultant amplitude is equal to one of the individual amplitudes, what can be concluded about their phase relationship?
If two waves have equal amplitudes and the resultant amplitude is equal to one of the individual amplitudes, what can be concluded about their phase relationship?
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What is the loss of potential energy in the last second of fall for a 0.4 kg mass dropped from height 'P'? (g = 10 m/s²)
What is the loss of potential energy in the last second of fall for a 0.4 kg mass dropped from height 'P'? (g = 10 m/s²)
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What is the average acceleration of a ball that contacts the floor for 0.3 s, rebounding to a height of 5.0 m from a drop of 10 m?
What is the average acceleration of a ball that contacts the floor for 0.3 s, rebounding to a height of 5.0 m from a drop of 10 m?
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If the lowest wavelength of the Lyman series is 917 Å, what is the lowest wavelength of the Balmer series?
If the lowest wavelength of the Lyman series is 917 Å, what is the lowest wavelength of the Balmer series?
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For a straight wire carrying a current of 14 A bent into a semicircular arc of radius 2.2 cm, what is the magnetic field at the center of the arc?
For a straight wire carrying a current of 14 A bent into a semicircular arc of radius 2.2 cm, what is the magnetic field at the center of the arc?
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When an elastic conducting material is stretched into a circular loop and released, if it starts shrinking at a rate of π cm/s, what is the induced emf when the radius is 10 cm in a magnetic field of 0.8 T?
When an elastic conducting material is stretched into a circular loop and released, if it starts shrinking at a rate of π cm/s, what is the induced emf when the radius is 10 cm in a magnetic field of 0.8 T?
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In a setup with three identical polaroids where P2 and P3 are at 60º and 90º to P1, what will be the intensity of light at point O if the intensity at source S is 256 W/m²?
In a setup with three identical polaroids where P2 and P3 are at 60º and 90º to P1, what will be the intensity of light at point O if the intensity at source S is 256 W/m²?
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What is the magnitude of potential energy converted to kinetic energy when a ball falling from 10 m rebounds to a height of 5.0 m?
What is the magnitude of potential energy converted to kinetic energy when a ball falling from 10 m rebounds to a height of 5.0 m?
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If the radius of a circular loop made of elastic material is shrinking at π cm/s, what rate is the area of the loop changing when the radius is 10 cm?
If the radius of a circular loop made of elastic material is shrinking at π cm/s, what rate is the area of the loop changing when the radius is 10 cm?
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Study Notes
Physics MCQs with Single Option Correct
- An alpha particle, a proton, and an electron have the same kinetic energy. The De Broglie wavelength of the alpha particle is greater than the proton, which is greater than the electron.
- In a cuboid with dimensions 2L x 2L x L, a charge q is placed at the center of surface S with an area of 4L2. The flux through the surface opposite to S is q / 3ε0
- The ratio of thermal energy released in two resistors R and 3R connected in series in an electric circuit is 1:3.
- A conducting loop of radius 20/π cm is placed perpendicular to a uniform magnetic field of 0.5T. The magnetic field is decreased to zero in 0.5 s at a steady rate. The energy gained by the electrons in the loop is 2.07 eV.
- The velocity-time graph of a body moving in a straight line is given. The ratio of the kinetic energy of the stone at the point of projection to its kinetic energy at the highest point of flight is 4:1.
- A cell of emf 270 V is connected across a series combination of two resistors, each with a resistance of 100 Ω. A voltmeter with a resistance of 400 Ω is used to measure the potential difference across each resistor. The reading of the voltmeter will be 90V.
- A car is moving on a horizontal curved road with a radius of 50m. The approximate maximum speed of the car is 16 ms-1 if the friction between the tires and the road is 0.512.
- The resistance of a metallic wire is directly proportional to its length and inversely proportional to its cross-sectional area.
- A tyre is filled with air having pressure of 270 kPa at 27°C. The approximate pressure of the air in the tyre when the temperature increases to 37°C is 278 kPa.
- Two objects are projected with the same velocity 'u' but at different angles α and β with the horizontal. If α + β = 90°, the ratio of the horizontal range of the second object to the first object will be 1:1.
- For a periodic motion represented by the equation Y = sin ωt + cos ωt, the amplitude of the motion is √2.
- The threshold wavelength for photoelectric emission from a material is 5500 Å. Photoelectrons will be emitted when this material is illuminated with monochromatic radiation from a 75 W ultraviolet lamp or a 10 W ultraviolet lamp.
- A uniform metallic wire carries a current of 1 A when a 3.4 V battery is connected across it. The length of the wire is 170 m.
- The energy released per fission of a nucleus of 240X is 200 MeV. The energy released if all the atoms in 60 g of pure 240X undergo fission is 1.2 × 1025 MeV.
- The moment of inertia of a circular disc about an axis passing through its center and perpendicular to the plane of the disc (ICM) is (1/2)MR^2; and the moment of inertia about an axis AB perpendicular to the plane and parallel to axis CM at a distance R from the center (IAB) is (5/4)MR^2. The ratio of IAB and ICM is 5:4.
- A 0.4 kg mass takes 6 s to reach the ground when dropped from a certain height 'P' above the surface of the earth. The loss of potential energy in the last second of fall is 12 J.
- A ball is dropped onto the floor from a height of 10 m. It rebounds to a height of 5.0 m. The ball comes in contact with the floor for 0.3 s. The average acceleration during contact is 111.1 ms-2.
- If 917 Å is the lowest wavelength of the Lyman series, then the lowest wavelength of the Balmer series will be 3668 Å.
- A straight wire carrying a current of 14 A is bent into a semicircular arc of radius 2.2 cm. The magnetic field produced by the current at the center (O) of the arc is 2 × 10-4 T.
- A certain elastic conducting material is stretched into a circular loop. It is placed with its plane perpendicular to a uniform magnetic field B = 0.8T. When released, the radius of the loop starts shrinking at a constant rate of (3/π) cm-1. The induced emf in the loop at an instant when the radius of the loop is 10 cm will be 0.6 mV.
- Three identical polaroids P1, P2, and P3 are placed one after another. The pass axis of P2 and P3 are inclined at angles of 60° and 90° with respect to the axis of P1. The source S has an intensity of 256 W/m2. The intensity of light at point O is 16 W/m2.
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Description
Test your knowledge with this collection of multiple choice questions covering various topics in physics. Each question focuses on critical concepts including kinetic energy, electric circuits, magnetic fields, and more. Challenge yourself to see how well you understand these fundamental principles.
