Q12 of 54 Page 390

The bells of a temple are made of large size. It is for:

A larger bell has low resonant frequency and the sound is able to travel more distance and is louder.

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10

The walls of a hall built for musical concert should :

 11

In an orchestra, the musical sounds of different instruments are distinguished from one another by the characteristic of:

 13

An astronaut cannot hear his companion on the surface of the Moon because:

 14

The loudness of a sound depends upon: