Echo can be heard if

the minimum distance between the source of sound and the obstacle is

17 m

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the obstacle is rigid and hard.

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both A and B hold

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none of A and B hold

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Solution

The correct option is C both A and B hold
The options are the conditions for an echo to be produced. The obstacle should be rigid at a minimum distance of $17 m$ for an echo to be produced.

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Similar questions

Q. An echo will be heard if the minimum distance between the source of sound and obstacle is?

Q. An echo will be heard if the minimum distance between the source of sound and the obstacle is :

[assume air to be the medium]

Q. Velocity of sound in the atmosphere of a planet is

500 m s^{- 1}

. The minimum distance between the source of sound and the obstacle for an echo heard is

Calculate the minimum distance in air required between the source of sound and the obstacle to hear an echo. Take speed of sound in air = 350 m $s^{- 1}$ .

The minimum distance in air between the observer and the obstacle for an echo to be heard clearly at temperatures higher than $25^{0} C$ is :

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Echo can be heard if

The correct option is C both A and B holdThe options are the conditions for an echo to be produced. The obstacle should be rigid at a minimum distance of 17m for an echo to be produced.

The correct option is C both A and B hold
The options are the conditions for an echo to be produced. The obstacle should be rigid at a minimum distance of $17 m$ for an echo to be produced.