Read the passage and answer the following question: Sound is produced due to vibration. The to and fro motion of an object is known as vibration. This motion is also known as oscillatory motion. Time to complete one oscillation is known as its time period. Frequency and amplitude of the oscillation are characteristics of sound. A frequency of 1 Hz is one oscillation per second. Loudness of sound is proportional to the square of the amplitude of the vibration producing the sound. Loudness of a sound in busy traffic, soft whispering and in normal conversation are 70 dB, 30 dB and 60 dB respectively. It can be concluded that_________.
options:-
1.amplitude of sound in busy traffic is greater than normal conversation.
2.amplitude of sound in busy traffic is less than soft whispering.
3.amplitude of sound in soft whispering is more than normal conversation.
4.amplitude of sound in soft whispering is equal to normal conversation
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Answer:
30 db is your answer in 2nd question
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