NCERT Exemplar III — task. Science CBSE, Class 8.

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1. The loudness of sound is measured in units of

Hertz (Hz)
Metre/Second (m/s)
Decibel (dB)
Metre (m)

2. The loudness of sound is determined by the

frequency of vibration
the ratio of amplitude and frequency of vibration
amplitude of vibration
product of amplitude and frequency of vibration

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