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Physics

Echo

A man blows a...

Question

A man blows a whistle and hears an echo after $1.2 s e c o n d s$ . The distance between the man and the reflector of the sound in m is: (take the velocity of sound in air is $330 m s^{- 1}$ )

250

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190

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298

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198

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Solution

The correct option is D $198$
A man blows a whistle and hears an echo after 1.2 seconds. The distance between the man and the reflector of the sound is

$d = \frac{1}{2} (v \times t)$

$= \frac{1}{2} (330 \times 1.2) = 198 m$ .

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A man blows a whistle and hears an echo after 1.2 seconds. The distance between the man and the reflector of the sound in m is: (take the velocity of sound in air is 330ms−1)

The correct option is D 198A man blows a whistle and hears an echo after 1.2 seconds. The distance between the man and the reflector of the sound is d=12(v×t)=12(330×1.2)=198m.

A man blows a whistle and hears an echo after $1.2 s e c o n d s$ . The distance between the man and the reflector of the sound in m is: (take the velocity of sound in air is $330 m s^{- 1}$ )

The correct option is D $198$
A man blows a whistle and hears an echo after 1.2 seconds. The distance between the man and the reflector of the sound is

$d = \frac{1}{2} (v \times t)$

$= \frac{1}{2} (330 \times 1.2) = 198 m$ .