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प्रश्न
After the thunder of a cloud, hearing of series of echoes from different reflectors is called:
विकल्प
resonance
reverberations
serial echoes
none of these
MCQ
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उत्तर
Reverberations
Explanation:
Reverberation is the persistence of sound due to repeated reflections from different surfaces. Resonance is a large vibration produced when the applied frequency matches a body's natural frequency.
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