Physics Questions Answers

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

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

  Answer :

  Option A

• 16. Which instrument is used to record physical happenings at a distant place ?

  1. Thermostat
  2. Tonometer
  3. Telemeter
  4. Transponder

  Answer :

  Option C

  Explanation:

  Thermostat - is used to regulate the temperature at a particular point.
  
  Tonometer - is used to measure the pitch of a sound,
  
  Transponder - is used to receive a signal and transmit a reply immediately.

• 17. radian per second is unit of

  1. 80%
  2. 100%
  3. 125%
  4. 130%
  5. Momentum
  6. Moment of Inertia
  7. Frequency
  8. Angle Velocity

  Answer :

  Option

  Explanation:

  unit of Momentum is kilogram meter per second,
  
  unit of Moment of Inertia is kilogram square meter,
  
  unit of frequency is Hertz.

• 18. Scalar Quantities are

  1. physical quantities which have magnitude only and no direction
  2. physical quantities which have no magnitude only and only direction
  3. physical quantities which have magnitude only and direction
  4. physical quantities which have no magnitude and no direction

  Answer :

  Option A

• 19. Device used to measure potential difference between two points in a circuit is ?

  1. Ammeter
  2. Galvanometer
  3. Voltmeter
  4. None of above

  Answer :

  Option C

• 20. Which instrument is used to measure altitudes in aircraft's ?

  1. Audiometer
  2. Ammeter
  3. Altimeter
  4. Anemometer

  Answer :

  Option C

  Explanation:

  Ammeter - Measures strength of electric current.
  
  Audiometer - Measures intensity of sound.
  
  Anemometer - Measures force and velocity of wind and directions.

• 21. 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

  Answer :

  Option D