EASY
RRB NTPC CBT 1
IMPORTANT
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A refrigerator works on which of the following principles?
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Important Questions on Physics
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RRB NTPC CBT 1
IMPORTANT
Velocity of sound in air does not depend on:
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RRB NTPC CBT 1
IMPORTANT
In which medium, the velocity of sound is maximum?
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RRB NTPC CBT 1
IMPORTANT
The sound having a frequency of to are known as _____.
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RRB NTPC CBT 1
IMPORTANT
Sound cannot pass through _____.
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RRB NTPC CBT 1
IMPORTANT
Among the following materials, sound travels fastest in _____.
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RRB NTPC CBT 1
IMPORTANT
The sound produced by a bat is _____.
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RRB NTPC CBT 1
IMPORTANT
The persistence of a sound in a big hall due to repeated reflection from walls, ceiling, the floor is known as _____.
EASY
RRB NTPC CBT 1
IMPORTANT
Longitudinal waves cannot travel through _____.
