Q. In a thin film of oil on water, which color will appear at the center of the pattern if the film thickness is such that it causes constructive interference for blue light? (2022)
  • A. Red
  • B. Green
  • C. Blue
  • D. Yellow
Q. In a thin film of oil on water, which color will appear at the center of the pattern if the film is viewed in white light? (2022)
  • A. Red
  • B. Blue
  • C. Green
  • D. Yellow
Q. In a thin film of oil on water, which color will appear at the center of the pattern if the film thickness is such that it causes constructive interference for red light? (2022)
  • A. Red
  • B. Blue
  • C. Green
  • D. Yellow
Q. In a uniform magnetic field, a charged particle moves in a circular path. What is the relationship between the radius of the path and the speed of the particle? (2022)
  • A. Directly proportional
  • B. Inversely proportional
  • C. No relation
  • D. Quadratic relation
Q. In a uniform magnetic field, the magnetic force on a current-carrying conductor is maximum when the angle between the conductor and the field is: (2019)
  • A. 0 degrees
  • B. 90 degrees
  • C. 45 degrees
  • D. 180 degrees
Q. In a vacuum, which of the following travels the fastest?
  • A. Sound
  • B. Light
  • C. Water waves
  • D. Radio waves
Q. In an AC circuit, if the current is given by I(t) = I0 cos(ωt), what is the RMS current? (2021)
  • A. I0/√2
  • B. I0
  • C. 2I0
  • D. I0/2
Q. In an AC circuit, if the frequency is 60Hz and the inductance is 0.2H, what is the inductive reactance? (2021)
  • A. 12.56Ω
  • B. 37.68Ω
  • C. 75.36Ω
  • D. 100Ω
Q. In an AC circuit, if the frequency is increased, what happens to the capacitive reactance? (2020)
  • A. It increases
  • B. It decreases
  • C. It remains constant
  • D. It becomes zero
Q. In an AC circuit, if the frequency is increased, what happens to the inductive reactance? (2020)
  • A. It increases
  • B. It decreases
  • C. It remains constant
  • D. It becomes zero
Q. In an AC circuit, if the power factor is 0.8, what is the angle between the voltage and current? (2020)
  • A. 36.87°
  • B. 53.13°
  • C. 60°
  • D. 45°
Q. In an AC circuit, if the resistance is 10 ohms and the inductive reactance is 20 ohms, what is the total impedance? (2020)
  • A. 10 ohms
  • B. 20 ohms
  • C. √(10² + 20²)
  • D. 30 ohms
Q. In an AC circuit, if the resistance is 10 ohms and the inductive reactance is 20 ohms, what is the impedance? (2020)
  • A. 10 ohms
  • B. 20 ohms
  • C. √(10² + 20²)
  • D. 30 ohms
Q. In an AC circuit, if the resistance is 10Ω and the inductive reactance is 20Ω, what is the total impedance? (2020)
  • A. 10Ω
  • B. 20Ω
  • C. √(10² + 20²)
  • D. 30Ω
Q. In an AC circuit, if the total current is 5A and the total voltage is 100V, what is the impedance? (2021)
  • A. 20Ω
  • B. 25Ω
  • C. 30Ω
  • D. 15Ω
Q. In an AC circuit, if the voltage is 120 V and the current is 10 A with a power factor of 0.8, what is the real power consumed? (2021)
  • A. 960 W
  • B. 1200 W
  • C. 800 W
  • D. 1000 W
Q. In an AC circuit, if the voltage is 120 V and the current is 10 A, what is the apparent power? (2022)
  • A. 120 W
  • B. 1200 W
  • C. 1000 VA
  • D. 100 VA
Q. In an AC circuit, if the voltage is 120 V and the current is 10 A, what is the power factor if the real power is 600 W? (2021)
  • A. 0.5
  • B. 0.6
  • C. 0.8
  • D. 1.0
Q. In an AC circuit, if the voltage is 120V and the current is 10A with a power factor of 0.8, what is the real power consumed? (2021)
  • A. 120W
  • B. 800W
  • C. 960W
  • D. 1000W
Q. In an AC circuit, if the voltage is 120V and the current is 10A, what is the power factor if the real power is 600W? (2022)
  • A. 0.5
  • B. 0.6
  • C. 0.8
  • D. 1.0
Q. In an AC circuit, if the voltage is given by V(t) = 100 sin(100t), what is the RMS voltage? (2023)
  • A. 100 V
  • B. 70.7 V
  • C. 50 V
  • D. 141.4 V
Q. In an AC circuit, if the voltage is given by V(t) = 100√2 sin(1000t), what is the peak voltage? (2023)
  • A. 100 V
  • B. 100√2 V
  • C. 200 V
  • D. 50 V
Q. In an AC circuit, if the voltage is V(t) = 120 sin(ωt), what is the RMS voltage? (2017)
  • A. 120 V
  • B. 60 V
  • C. 84.85 V
  • D. 100 V
Q. In an AC circuit, the voltage is given by V(t) = V0 sin(ωt). What is the peak voltage? (2021)
  • A. V0
  • B. ω
  • C. t
  • D. 0
Q. In an AC circuit, the voltage is given by V(t) = V0 sin(ωt). What is the peak voltage if V0 = 10V? (2021)
  • A. 5V
  • B. 10V
  • C. 15V
  • D. 20V
Q. In an AC generator, the induced EMF is maximum when the coil is positioned at what angle to the magnetic field?
  • A. 0 degrees
  • B. 45 degrees
  • C. 90 degrees
  • D. 180 degrees
Q. In an adiabatic process, the temperature of an ideal gas decreases. What happens to its pressure?
  • A. Increases
  • B. Decreases
  • C. Remains constant
  • D. Depends on volume
Q. In an isochoric process, what remains constant? (2021)
  • A. Pressure
  • B. Volume
  • C. Temperature
  • D. Heat
Q. In an isochoric process, which of the following remains constant? (2022)
  • A. Pressure
  • B. Volume
  • C. Temperature
  • D. Internal Energy
Q. In an isothermal process, the temperature of an ideal gas remains constant. If the volume of the gas is doubled, what happens to the pressure? (2020)
  • A. It doubles
  • B. It halves
  • C. It remains constant
  • D. It quadruples
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