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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. 71 When the source of sound moves away form a stationary listener then ______________ occurs
  2. 72 Which one is the correct relation for fundamental frequency of open and closed pipe
    1. fopen = 2 fclosed

    2. fclosed = 2fopen

    3. fopen = fclosed

    4. fopen = 1 / f closed

    See Answer

    Added By: Ak Aamir

  3. 73 Newton estimated the speed of sound _____________________
    1. 281m/sec

    2. 333m/sec

    3. 340m/sec

    4. all of the above

    See Answer

    Added By: Ak Aamir

  4. 74 The speed of sound in hydrogen is _____________ time than that in oxygen
    1. Two times

    2. Three times

    3. Four time

    4. Six time

    See Answer

    Added By: Ak Aamir

  5. 75 The speed of stationary waves in a stretched string are independent of___________________
  6. 76 Which phenomena can be applied to estimate the velocity of star with respect to earth ___________________
    1. Dopplers effect

    2. Interference of waves

    3. Beats phenomena

    4. All of these

    See Answer

    Added By: Ak Aamir

  7. 77 The waves that require a material medium for their propagation are called__________________
    1. matter waves

    2. electromagnetic waves

    3. carrier waves

    4. mechanical waves

    See Answer

    Added By: Ak Aamir

  8. 78 When two identical traveling waves are superimposed, the velocity of the resultant wave__________________
    1. decreases

    2. increases

    3. remains unchanged

    4. becomes zero

    See Answer

    Added By: Ak Aamir

  9. 79 If stretching force T of wire increases, then its frequency __________________
    1. decreases

    2. increases

    3. remains the same

    4. any of above

    See Answer

    Added By: Ak Aamir

  10. 80 It is possible to distinguish between transverse and longitudinal waves form the property of __________________
    1. refraction

    2. polarization

    3. interference

    4. diffraction

    See Answer

    Added By: Ak Aamir