JEE PHYSICS MCQ: WAVES

1 Medium

1 of 1

Understanding +4 | -1

Statement-I: When a wave is transmitted from one medium to another, the frequency does not change.
Statement-II: A wave transports energy and momentum along with matter.

View answer and explanation

Correct option: A

Statement-I is correct

Statement-I is correct because the frequency of a wave remains constant when it travels from one medium to another. Statement-II is incorrect because waves transport energy and momentum but not matter.

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The source of sound generating a frequency of

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reaches an observer with a speed of

0.5

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f\mathrm{ }Hz

V\mathrm{ }m/sec

. Two observers move away from this source in opposite directions each with a speed

0.2\,\,V

relative to the source. The ratio of frequencies heard by the two observers will be Assertion: The wave function of a pulse is given by

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

it propagates in

(– \mathrm{ve}) \,x

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y = f(kx +\omega t),

which represent a wave travelling in negative

X

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0.01\,\,s

. the fundamental frequency is A rope

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T

is the reverberation time of an auditorium of volume

V