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प्रश्न
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उत्तर
The audience in the auditorium as act obstructions in the path of sound waves; so they sound waves are not reflected much less and hence the echoes usually decrease.
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संबंधित प्रश्न
How is the frequency of a stretched string related it’s tension?
Define amplitude term in relation to a wave.
Define frequency term in relation to a wave.
What is the condition necessary for an echo to be heard distinctly?
Explain how the principle of echo is used by
The bat during its flight at
Point out the waves from the given list, i.e., light, sound, radio waves, ultrasonic waves, and thermal radiation, the energy is propagated by mechanical waves.
Mention two properties of a wave, one property which varies and the other which remains constant when the wave passes from one medium to another.
Name the type of waves that are used for sound ranging. Why are radio waves not audible to us?
Explain reflection at the boundary of a rarer medium.
