A point source of sound emits waves equally in all directions. The medium surrounding the source of sound is non-absorbing. Two points A and B are situated at a distance of 40 m and 20 m respectively from the source. The ratio of the amplitudes of the waves at A and B is

A point source of sound emits waves equally in all directions. The med

1.	A point source of sound emits waves equally in all directions. The medium surrounding the source of sound is non-absorbing. Two points A and B are situated at a distance of 40 m and 20 m respectively from the source. The ratio of the amplitudes of the waves at A and B is
Answer» `1:2` `1:4` `4:1` `2:1` ANSWER :D

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A point source of sound emits waves equally in all directions. The medium surrounding the source of sound is non-absorbing. Two points A and B are situated at a distance of 40 m and 20 m respectively from the source. The ratio of the amplitudes of the waves at A and B is

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