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Equation of a wave propagating on a stri...

Equation of a wave propagating on a string is `y =3 cos {pi (100 t - x)}` (Where x is in cm and t is in s). Find its wavelength.

A

100 cm

B

2 cm

C

5 cm

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
Here `y = cos (100 pi t - pi x)`
Comparing with `y = a cos (omega t - kx) ` we get,
`k = pi implies (2pi)/(lamda) = pi implies lamda = 2 cm`
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