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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. 81 Sound waves do not travel in vacuum because ___________________
  2. 82 Increase in velocity of sound in the air for 1C rise in temperature is_________________
    1. 1.61 ms-1

    2. 61.0 ms-1

    3. 0.61 ms-1

    4. 2.00 ms-1

    See Answer

    Added By: Ak Aamir

  3. 83 On loading the prong of a tuning form with wax its frequency____________________
    1. increases

    2. decreases

    3. remains unchanged

    4. may increase or decrease

    See Answer

    Added By: Ak Aamir

  4. 84 The normal ear is the most sensitive in the frequency range___________________
    1. 20000 to 30000 hertz

    2. 10 to 20 hertz

    3. 2000 to 4000 hertz

    4. 6000 to 8000 hertz

    See Answer

    Added By: Ak Aamir

  5. 85 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

  6. 86 The periodic alternation of sound between maximum and minimum loudness are called___________________
    1. silence zone

    2. interference

    3. beats

    4. resonance

    See Answer

    Added By: Ak Aamir

  7. 87 Beats are the results of____________________
    1. diffraction of sound waves

    2. constructive and destructive interference

    3. polarization

    4. destructive interference

    See Answer

    Added By: Ak Aamir

  8. 88 Doppler effect applies to____________________
    1. sound wave only

    2. light wave only

    3. both sound and light waves

    4. neither sound nor light wave

    See Answer

    Added By: Ak Aamir

  9. 89 A simple pendulum has a bob of mass m and its frequency is f. If we replaced the bob with a heavier one say of 2m then that will be its new frequency
    1. 1/4f

    2. 1/2f

    3. frequency lower than 20 Hz

    4. 2f

    See Answer

    Added By: Ak Aamir

  10. 90 In open organ pipe___________________