Physics Questions Answers Online Quiz Test

• 1. The rotational effect of a force on a body about an axis of rotation is described in terms of

  1. Centre of gravity
  2. Centripetal force
  3. Centrifugal force
  4. Moment of force

• 2. Energy posses by a body in motion is called

  1. Kinetic Energy
  2. Potential Energy
  3. Both of Above
  4. None of Above

• 3. Electric Motor converts

  1. Electrical energy into mechanical energy
  2. Mechanical energy into Electrical energy
  3. Electrical energy into light energy
  4. None of above

• 4. Solar cell converts

  1. Sound energy into electrical energy
  2. Electrical energy into mechanical energy
  3. Solar energy into electrical energy
  4. Electrical energy into light energy

• 5. If lift is going up with acceleration, the apparent weight of a body is

  1. may be more or less than true weight
  2. equal to the true weight
  3. less than the true weight
  4. more than the true weight

• 6. All planets move around the sun in elliptical orbits, with the sun being at rest at one focus of the orbit.

  1. True
  2. False

• 7. Orbital speed of a satellite is dependent of its mass.

  1. True
  2. False

• 8. What is escape velocity ?

  1. Escape velocity is the maximum velocity with which a body should be projected from the surface of earth so it do not go beyond gravitational field of earth.
  2. Escape velocity is the minimum velocity with which a body should be projected from the surface of earth so it do not go beyond gravitational field of earth.
  3. Escape velocity is the minimum velocity with which a body should be projected from the surface of earth so as it goes out of gravitational field of earth and never return to earth.
  4. Escape velocity is the maximum velocity with which a body should be projected from the surface of earth so as it goes out of gravitational field of earth and never return to earth.

• 9. Atmospheric pressure is measured by

  1. Tonometer
  2. Pyrometer
  3. Barometer
  4. Thermometer

• 10. Sudden fall in barometer is indication of

  1. Storm
  2. Rain
  3. Tide
  4. Clear weather

• 11. Which is true
  

  1. In a static liquid at same horizontal level, pressure is more at centre
  2. In a static liquid at same horizontal level, pressure is less at centre.
  3. In a static liquid at same horizontal level, pressure is same at all points
  4. In a static liquid at same horizontal level, pressure is different at all points

• 12. When a body is immersed partly or wholly in a liquid, there is an apparent loss in weight of the body which is equal to the weight of liquid displaced by the body.

  1. True
  2. False

• 13. Force of attraction between the molecules of different substances is called

  1. Surface tension
  2. Cohensive force
  3. Adhesive force
  4. None of above

• 14. The force which opposes the relative motion between different layers of liquid or gases is called

  1. Critical Velocity
  2. Streamline Flow
  3. Terminal Velocity
  4. Viscous Force

• 15. What is the maximum value of deforming force upto which a material shows elastic property and above which the material loses it ?

  1. Elasticity
  2. Strain
  3. Elastic Limit
  4. Stress

• 16. What is Hooke's Law ?

  1. Stress is inversely proportional to strain.
  2. Stress is directly proportional to strain.
  3. Stress and strain are dependent on each other.
  4. Stress and strain are independent of each other.

• 17. Lognitudinal waves and Transverse waves are types of ?

  1. Mechanical waves
  2. Non-Mechanical waves
  3. Both of above
  4. None of Above

• 18. Which of the following is an electromagnetic wave ?

  1. Cathode rays
  2. Sound wave
  3. Ultrasonic wave
  4. Infra red rays

• 19. What is the relation between wavelength, frequency and velocity ?

  1. velocity of wave = frequency * wavelength
  2. velocity of wave = frequency/wavelength
  3. velocity of wave = wavelength/frequency
  4. None of above

• 20. What are audible sound waves ?

  1. Having frequency less than 20 Hz
  2. Having frequency between 20 Hz to 20000 Hz
  3. Having frequency more than 20000 Hz
  4. None of above