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Sound Test - 51...

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  • Question 1
    1 / -0

    Repetitions of sound due to the reflection of original sound heard by a large and hard obstacle is known as:

  • Question 2
    1 / -0

    As the temperature of the medium increases,

  • Question 3
    1 / -0

    Sound of explosion taking on other planets are not heard by a person on the earth. Why?

  • Question 4
    1 / -0

    Two astronauts on the surface of the moon cannot talk to each other. Why

  • Question 5
    1 / -0

    Reverberation time of a hall used for speeches should be very short. Why?

  • Question 6
    1 / -0

    Mark the correct statement .
    i) rock music also becomes less pleasing with excessive reverberation.
    ii) excessive reverberation is desirable in case of orchestral and choral music.
    iii) excessive reverberation makes the speech of a person indistinct.

  • Question 7
    1 / -0

    The persistence of audible sound due to the successive reflections from the surrounding objects even after the source has stopped to produce that sound is called

  • Question 8
    1 / -0

    An echo is heard on a day when temperature is about$${22}^{0}$$C. Will echo be heard sooner or later, if the temperature increases to $${40}^{0}$$C?

  • Question 9
    1 / -0

    During winter, an echo is heard

  • Question 10
    1 / -0

    SONAR works on the Principle of :

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