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Waves Test - 41...

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  • Question 1
    4 / -1

    Frequency range of the audible sounds is

  • Question 2
    4 / -1

    In a medium sound travels 2 km in 3 sec and in air, it travels 3 km in 10 sec. The ratio of the wavelengths of sound in the two media is

  • Question 3
    4 / -1

    A stone is dropped in a well which is 19.6 m deep. Echo sound is heard after 2.06 sec (after dropping) then the velocity of sound is

  • Question 4
    4 / -1

    Sound waves transfer

  • Question 5
    4 / -1

    At which temperature the speed of sound in hydrogen will be same as that of speed of sound in oxygen at 100°C?

  • Question 6
    4 / -1

    A tuning fork produces waves in a medium. If the temperature of the medium changes, then which of the following will change?

  • Question 7
    4 / -1

    The wavelength of light in visible part (λV) and for sound (λS) are related as

  • Question 8
    4 / -1

    The phase difference between two points separated by lm in a wave of frequency 120 Hz is 90°. The wave velocity is

  • Question 9
    4 / -1

    The echo of a gun shot is heard 8 sec. after the gun is fired. How far from him is the surface that reflects the sound ? (velocity of sound in air = 350 m/s)

  • Question 10
    4 / -1

    A man sets his watch by the sound of a siren placed at a distance 1 km away. If the velocity of sound is 330 m/s

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