πŸ“Š Physics
Q. Out of the following pairs, choose the pair in which the physical quantities do not have identical dimension?
  • (A) Pressure and Young's modules
  • (B) Planck's constant and Angular momentum
  • (C) Impulse and moment of force
  • (D) Force and rate of change of linear momentum
πŸ’¬ Discuss
βœ… Correct Answer: (C) Impulse and moment of force
πŸ“Š Physics
Q. If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same:
  • (A) Velocity
  • (B) Momentum
  • (C) Acceleration
  • (D) Kinetic energy
πŸ’¬ Discuss
βœ… Correct Answer: (B) Momentum
πŸ“Š Physics
Q. Pick out the scalar quantity
  • (A) Force
  • (B) Pressure
  • (C) Velocity
  • (D) Acceleration
πŸ’¬ Discuss
βœ… Correct Answer: (B) Pressure
πŸ“Š Physics
Q. Sound of frequency below 20 Hz is called
  • (A) audio sounds
  • (B) infrasonic
  • (C) ultrasonic
  • (D) supersonics
πŸ’¬ Discuss
βœ… Correct Answer: (B) infrasonic
πŸ“Š Physics
Q. On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because:
  • (A) mercury is a metal.
  • (B) density of mercury is greater than that of water.
  • (C) cohesion of mercury is greater than its adhesion with glass.
  • (D) cohesion of water is greater than its adhesion with glass.
πŸ’¬ Discuss
βœ… Correct Answer: (C) cohesion of mercury is greater than its adhesion with glass.
πŸ“Š Physics
Q. Suitable impurities are added to a semiconductor depending on its use. This is done in order to
  • (A) increase its life
  • (B) enable it to withstand higher voltages
  • (C) increase its electrical conductivity
  • (D) increase its electrical resistivity
πŸ’¬ Discuss
βœ… Correct Answer: (C) increase its electrical conductivity
πŸ“Š Physics
Q. Stars twinkle because
  • (A) the intensity of light emitted by them changes with time.
  • (B) the distance of the stars from the earth changes with time.
  • (C) the refractive index of the different layers of the earth's atmosphere changes continuously.
  • (D) None of these
πŸ’¬ Discuss
βœ… Correct Answer: (C) the refractive index of the different layers of the earth's atmosphere changes continuously.
πŸ“Š Physics
Q. It takes much longer to cook food in the hills than in the plains, because
  • (A) in the hills the atmospheric pressure is lower than that in the plains and therefore water boils at a temperature lower than 100oC causing an increase in cooking time
  • (B) due to low atmospheric pressure on the hills, the water boils at a temperature higher than 100oC and therefore water takes longer to boil
  • (C) in the hills the atmospheric density is low and therefore a lot of heat is lost to the atmosphere
  • (D) in the hills the humidity is high and therefore a lot of heat is absorbed by the atmosphere leaving very little heat for cooking
πŸ’¬ Discuss
βœ… Correct Answer: (A) in the hills the atmospheric pressure is lower than that in the plains and therefore water boils at a temperature lower than 100oC causing an increase in cooking time
πŸ“Š Physics
Q. Moment of inertia is:
  • (A) Vector
  • (B) Scalar
  • (C) Phasor
  • (D) Tensor
πŸ’¬ Discuss
βœ… Correct Answer: (D) Tensor
πŸ“Š Physics
Q. Of the following natural phenomena, tell which one known in Sanskrit as 'deer's thirst'?
  • (A) Rainbow
  • (B) Earthshine
  • (C) Halo
  • (D) Mirage
πŸ’¬ Discuss
βœ… Correct Answer: (D) Mirage

Jump to

Tags: Physics mcqs, important mcqs of Physics, Physics important Physics mcqs, mcqs on Physics, important mcqs on Physics, mcqs of Physics