Question

In an unoccupied hall of a choultry you will experience the echo effect of sound. If the same hall is furnished with almirahs, tables, chairs, and other commodities, you may not experience the echo clearly. It is because,
a. sound waves get absorbed by the objects in the hall.
b. the area of reflecting surface decreases
c. reflected sound is reflected again.
d. sound does not get reflected

Answer 1

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Good Question

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Option : A

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In an unoccupied hall of a choultry you will experience the echo effect of sound. If the same hall is furnished with almirahs, tables, chairs, and other commodities, you may not experience the echo clearly. It is because,

a. sound waves get absorbed by the objects in the hall.

b. the area of reflecting surface decreases

c. reflected sound is reflected again.

d. sound does not get reflected

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Answer 2

Dear Student,

◆ Answer -

If the hall of a choultry is furnished with almirahs, tables, chairs, and other commodities, you may not experience the echo clearly. It is because, sound waves get absorbed by the objects in the hall.

● Echo -

• Echo is a reflection of sound that arrives at the listener with a delay after the direct sound.

◆ Uses of echoes -

• SONAR - SOund Navigation And Ranging
• Detection of gases in mines
• Searching for fishes using echo
• Tracking of target military submarines
• Sea depth mapping

Thanks dear. Hope this helps you...