JEE PHYSICS MCQ: WAVES

1 Medium

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Analyzing +4 | -1

A sound wave of frequency

n

travels horizontally to the right. It is reflected from a large vertical plane surface moving to the left with speed

v

. The speed of the sound in the medium is

c.

Then

View answer and explanation

Correct option: C

The number of waves strike the surface per second is

n\left[ {\frac{{c + v}}{c}} \right]

Option C (The number of waves strike the surface per second is

n\left[ {\frac{{c + v}}{c}} \right]

) is correct because it represents the apparent frequency observed by the moving surface due to the Doppler effect.

More Questions from WAVES

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3\,\,kHz

0.5

f\mathrm{ }Hz

V\mathrm{ }m/sec

0.2\,\,V

y = \frac{3}{{{{\left( {2x + 3t} \right)}^2} + 4}},

(– \mathrm{ve}) \,x

y = f(kx +\omega t),

X

0.01\,\,s

5 \mathrm{~m}

245 \mathrm{~g}

1 \mathrm{~kg}

g=980 \mathrm{~cm} \mathrm{~s}^{-2}

T

V