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Question

A wave is represented by the equation

y = (0.001 mm) sin[(50 s1)t + (2.0 m1)x].


A

The wave velocity = 100 m/s.

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B

The wavelength = 2.0 m.

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C

The frequency = 25π Hz.

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D

The amplitude = 0.01 mm.

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Solution

The correct option is C

The frequency = 25π Hz.


Comparing with the standard equation,

y = A sin (ω t+kx)

ω = 2 π f = 50

f= 25π Hz

Amplitude is A= 0.001 mm.

K = 2 =2 πλ

λ= π m

v = wk = 502 = 25 m s1.


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