Menu
Home / General Knowledge / Physics :: section - 8

General Knowledge :: Physics

Physics - Section 1
Physics - section-2
Physics - section-3
Physics - section-11
Physics - section-12
Physics - section-13
Physics - section-14
Physics - section-15
Physics - section-16
Physics - section-17
Physics - section-18
Physics - section-19
Physics - section-20
Physics - section-21
Physics - section-22
Physics - section - 4
Physics - section - 5
Physics - section - 6
Physics - section - 7
Physics - section - 8
Physics - section - 9
Physics - section - 10
  1. Echolocation is an adaptation bats use to

    2. A.

     Locate flowering plants
    B.

     Hunt insects in flight
    C.

     Find warm places for hibernation
    D.

     All of the above

    View Answer

    Workspace

    Discuss Discuss in Forum

  2. Bats can sense obstacles because they produce

    3. A.

     Supersonic sound waves
    B.

     Ultrasonic sound waves
    C.

     Infrasonic sound waves
    D.

     Micro sound waves

    View Answer

    Workspace

    Discuss Discuss in Forum

  3. A wavelength of 0.3 m is produced in air and it travels at a speed of 300 m/s. Then it will be an

    4. A.

     Audible wave
    B.

     Infrasonic wave
    C.

     Ultrasonic wave
    D.

     Microwave

    View Answer

    Workspace

    Discuss Discuss in Forum

  4. Which term is not associated with sound wave?

    5. A.

     Hertz
    B.

     Decibel
    C.

     Candela
    D.

     Mach

    View Answer

    Workspace

    Discuss Discuss in Forum

  5. Velocity of sound in air does not depend on

    6. A.

     Density of air
    B.

     Temperature of air
    C.

     Pressure of air
    D.

     Humidity of air

    View Answer

    Workspace

    Discuss Discuss in Forum

  6. Speed of sound in air is unaffected by change in

    7. A.

     Pressure
    B.

     Humidity
    C.

     Temperature
    D.

     Volume

    View Answer

    Workspace

    Discuss Discuss in Forum

  7. RADAR is used for

    8. A.

     Detecting and locating the position of objects such as Aeroplanes
    B.

     Locating submerged submarines
    C.

     Locating geostationary satellites
    D.

     Receiving a signals in a radio receiver

    View Answer

    Workspace

    Discuss Discuss in Forum

  8. What is the minimum distance (in metres) required to hear an echo?

    9. A.

     10
    B.

     13
    C.

     17
    D.

     21

    View Answer

    Workspace

    Discuss Discuss in Forum

  9. Sound travels fastest in

    10. A.

     Vacuum
    B.

     Air
    C.

     Glass
    D.

     Water

    View Answer

    Workspace

    Discuss Discuss in Forum

  10. Which among the following determines the pitch of a sound?

    11. A.

     Amplitude
    B.

     Frequency
    C.

     Loudness
    D.

     Wavelength

    View Answer

    Workspace

    Discuss Discuss in Forum

Java Programming Questions and Answers Interview Questions and Answers