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What acts as a closed switch in a Germanium diode when the voltage reaches approximately 0.4V?
What acts as a closed switch in a Germanium diode when the voltage reaches approximately 0.4V?
What is the equivalent resistance of two resistances connected in series if it is 100 ohms when in series and 24 ohms when in parallel?
What is the equivalent resistance of two resistances connected in series if it is 100 ohms when in series and 24 ohms when in parallel?
Syringes operate based on which principle?
Syringes operate based on which principle?
If one end of a metal rod with a thickness of 40 cm is at 90ºC and the temperature gradient is 3ºC/cm, what is the temperature at the other end?
If one end of a metal rod with a thickness of 40 cm is at 90ºC and the temperature gradient is 3ºC/cm, what is the temperature at the other end?
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What happens to the current through a forward-biased p-n junction diode when the applied voltage exceeds the knee voltage?
What happens to the current through a forward-biased p-n junction diode when the applied voltage exceeds the knee voltage?
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How many electrons are in the valence shell of an intrinsic semiconductor like silicon?
How many electrons are in the valence shell of an intrinsic semiconductor like silicon?
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What does a reverse-biased p-n junction diode act like?
What does a reverse-biased p-n junction diode act like?
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What is the resistance level of a reverse-biased p-n junction diode?
What is the resistance level of a reverse-biased p-n junction diode?
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What is the minimum energy calculated using the threshold wavelength of 2750 A˚?
What is the minimum energy calculated using the threshold wavelength of 2750 A˚?
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What happens to the velocity of a wave if its wavelength triples while keeping frequency constant?
What happens to the velocity of a wave if its wavelength triples while keeping frequency constant?
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What is the ratio of elongations of two wires with lengths 1 m and 2 m, and radii in the ratio 2:1?
What is the ratio of elongations of two wires with lengths 1 m and 2 m, and radii in the ratio 2:1?
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What is the total energy consumed by a kettle rated at 20 W over 600 seconds?
What is the total energy consumed by a kettle rated at 20 W over 600 seconds?
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What is the relationship between stress and change in length for a wire?
What is the relationship between stress and change in length for a wire?
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What is the frequency of simple harmonic motion (SHM) with a period of 0.1 seconds?
What is the frequency of simple harmonic motion (SHM) with a period of 0.1 seconds?
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What is the work done when a woman exerts a force of 10 N over a distance of 5 m?
What is the work done when a woman exerts a force of 10 N over a distance of 5 m?
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What is the maximum load to cross-sectional area ratio of a material called?
What is the maximum load to cross-sectional area ratio of a material called?
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What is the recoil velocity of a 5 kg gun firing a 50 gm bullet at 800 m/s?
What is the recoil velocity of a 5 kg gun firing a 50 gm bullet at 800 m/s?
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What is the time of flight for a body thrown at 75 m/s at a 45-degree angle, assuming g = 10 m/s²?
What is the time of flight for a body thrown at 75 m/s at a 45-degree angle, assuming g = 10 m/s²?
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What is the photoelectric work function of a metal surface if the energy of incident photons is 10 eV and the maximum kinetic energy of emitted photoelectrons is 6 eV?
What is the photoelectric work function of a metal surface if the energy of incident photons is 10 eV and the maximum kinetic energy of emitted photoelectrons is 6 eV?
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What is the frequency of motion for a particle in SHM if its time period is 0.1 sec?
What is the frequency of motion for a particle in SHM if its time period is 0.1 sec?
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What type of stress is defined when a force applied to a material results in a change in length?
What type of stress is defined when a force applied to a material results in a change in length?
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What is the definition of power in terms of work and time?
What is the definition of power in terms of work and time?
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Syringes of all types operate based on which principle?
Syringes of all types operate based on which principle?
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What is the temperature at the other end of a metal rod that is 40 cm long with a temperature gradient of 3ºC/cm if one end is at 90°C?
What is the temperature at the other end of a metal rod that is 40 cm long with a temperature gradient of 3ºC/cm if one end is at 90°C?
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If a person pushes a trolley with a force of 60 N over a distance of 2000 cm, what is the work done?
If a person pushes a trolley with a force of 60 N over a distance of 2000 cm, what is the work done?
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What is the kinetic energy of a 15 kg bicycle moving at 50 m/s?
What is the kinetic energy of a 15 kg bicycle moving at 50 m/s?
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What happens to the current in a forward biased p-n junction diode if the applied voltage exceeds the knee voltage?
What happens to the current in a forward biased p-n junction diode if the applied voltage exceeds the knee voltage?
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How many electrons are in the valence shell of an intrinsic semiconductor?
How many electrons are in the valence shell of an intrinsic semiconductor?
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What type of switch does a reverse biased p-n junction diode act as?
What type of switch does a reverse biased p-n junction diode act as?
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What is the resistance of a reverse biased p-n junction diode?
What is the resistance of a reverse biased p-n junction diode?
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If the reverse breakdown voltage of a p-n junction diode is 40V and it operates at 20V, what does it act as?
If the reverse breakdown voltage of a p-n junction diode is 40V and it operates at 20V, what does it act as?
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What will happen if a voltage of 0.4V is applied across a Ge diode?
What will happen if a voltage of 0.4V is applied across a Ge diode?
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What will a diode do when operated at 20V?
What will a diode do when operated at 20V?
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What behavior does a Ge diode exhibit when 0.4V is applied across it?
What behavior does a Ge diode exhibit when 0.4V is applied across it?
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If two resistances in series have an equivalent resistance of 100 ohms, what could their values be if connected in parallel yield 24 ohms?
If two resistances in series have an equivalent resistance of 100 ohms, what could their values be if connected in parallel yield 24 ohms?
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What is the correct operating voltage of an X-ray tube that emits X-rays of wavelength 0.1 Angstrom?
What is the correct operating voltage of an X-ray tube that emits X-rays of wavelength 0.1 Angstrom?
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For a metal with a threshold wavelength of 2750 Angstrom, what is the minimum energy to produce the photo effect?
For a metal with a threshold wavelength of 2750 Angstrom, what is the minimum energy to produce the photo effect?
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When the wavelength of a wave gets tripled while traveling to another medium, how does its velocity change?
When the wavelength of a wave gets tripled while traveling to another medium, how does its velocity change?
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What is the respective ratio of elongations for two wires of lengths 1m and 2m subjected to the same load?
What is the respective ratio of elongations for two wires of lengths 1m and 2m subjected to the same load?
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What is the wavelength of a wave if it travels at 760 m/s and 1800 waves pass through a point in one minute?
What is the wavelength of a wave if it travels at 760 m/s and 1800 waves pass through a point in one minute?
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Study Notes
Basic Science (Physics) SEM-I
- Q.1 Syringes: Syringes operate based on Boyle's law. Pulling the plunger increases the volume inside the syringe, reducing pressure, and drawing fluid in.
- Q.2 Temperature Gradient: The temperature gradient formula is: ΔT = gradient × distance
- Q.3 Forward Biased Diode: The current flowing through a forward-biased p-n junction diode increases once the applied voltage surpasses the knee voltage.
- Q.4 Intrinsic Semiconductor: Intrinsic semiconductors, like silicon or germanium, have four valence electrons per atom.
- Q.5 Reverse Biased Diode: A reverse-biased p-n junction diode acts as an open switch, preventing current flow.
Applied Science (Physics) SEM-II
- Q.1 X-ray Tube Voltage: The operating voltage of an X-ray tube is calculated using the formula E = hc/λ, where h is Planck's constant, c is the speed of light, and λ is the wavelength.
- Q.2 Threshold Wavelength: The minimum energy for the photoelectric effect is calculated using the formula E=hc/λ.
- Q.3 Wavelength and Velocity: If the wavelength of a wave triples when transitioning to another medium, the wave velocity also triples.
- Q.4 Ratio of Elongation: The ratio of elongations of two wires of equal material, but different length and radii, is determined by the relationship, ∆L1/∆L2=L1r2^2/L2r1^2.
- Q.5 Wave Velocity and Wavelength: A medium's wave velocity and wavelength are related—the higher the velocity, the greater the wavelength at a constant frequency.
Additional Problems (Pages 6-10)
- Q.6 to Q.14, Q.20: These questions cover a wide range of physics concepts, including SHM, recoil velocity, work, kinetic energy, and power. Specific answers aren't feasible without additional context.
Additional Problems (Page 11)
- Q.16-Q.20: These questions assess the understanding of energy, stress, and work, encompassing calculations involving electrical power and work done by pumps. Specific answers are contingent on contextual parameters in each problem.
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Description
This quiz covers fundamental concepts in basic and applied physics, including topics on syringes, temperature gradients, semiconductors, and X-ray tube operations. Test your knowledge on these essential principles and formulas across two semesters.
