Physics MCQs with Answers

This is Physics MCQs section with detailed explanations for preparation of screening tests, interviews for government jobs. In this section candidate will learn MCQs on variety of topics from the subject.

1. 61 The distance between any two consecutive crests or troughs is called____________________
   

   1. frequency

   2. period

   3. Wave length

   4. phase difference

   See Answer

   Added By: Ak Aamir

   Answer

   : Wave length

   Explanation

   :
   N/A

2. 62 In vibrating cord the points where the amplitude is maximum, are called ___________________
   

   1. antinodes

   2. nodes

   3. troughs

   4. crests

   See Answer

   Added By: Ak Aamir

   Answer

   : antinodes

   Explanation

   :
   N/A

3. 63 A stationary wave is set up in the air column of a closed pipe. At the closes end of the pipe _____________________
   

   1. always an node in formed

   2. always an antinode is formed

   3. neither node nor antinode is formed

   4. sometimes a node and sometimes an antinode is formed

   See Answer

   Added By: Ak Aamir

   Answer

   : always an node in formed

   Explanation

   :
   N/A

4. 64 According to Newton sound travel in air under the conditions of_____________________
   

   1. adiabatic

   2. isothermal

   3. isobaric

   4. isochoric

   See Answer

   Added By: Ak Aamir

   Answer

   : isobaric

   Explanation

   :
   N/A

5. 65 Velocity of sound in vacuum is ____________________
   

   1. 332 ms-1

   2. 320 ms-1

   3. Zero

   4. 224 ms-1

   See Answer

   Added By: Ak Aamir

   Answer

   : Zero

   Explanation

   :
   N/A

6. 66 The velocity of sound is greatest in___________________
   

   1. Water

   2. air

   3. copper

   4. ammonia

   See Answer

   Added By: Ak Aamir

   Answer

   : copper

   Explanation

   :
   N/A

7. 67 The velocity of sound in air would become double than its velocity at 0C at temperature
   

   1. 313C

   2. 586C

   3. 819C

   4. 1172C

   See Answer

   Added By: Ak Aamir

   Answer

   : 819C

   Explanation

   :
   N/A

8. 68 Ultrasonic have__________________
   

   1. frequency in the audible range

   2. frequency is greater than 20 kHz

   3. frequency lower than 20 Hz

   4. all of above

   See Answer

   Added By: Ak Aamir

   Answer

   : frequency is greater than 20 kHz

   Explanation

   :
   N/A

9. 69 The number of beats produced per second is equal to____________________
   

   1. the sum of the frequencies of two tuning forks

   2. the difference of the frequencies of two tuning forks

   3. the ratio of the frequencies of two tuning forks

   4. the frequency of either of the two tuning forks

   See Answer

   Added By: Ak Aamir

   Answer

   : the difference of the frequencies of two tuning forks

   Explanation

   :
   N/A

10. 70 Silence zone takes place due to____________________
    

    1. constructive interference

    2. destructive interference

    3. beats

    4. resonance

    See Answer

    Added By: Ak Aamir

    Answer

    : destructive interference

    Explanation

    :
    N/A