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JEE PHYSICS MCQ: UNITS & MEASUREMENTS

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Analyzing +4 | -1

The equation of the stationary wave is

y=2 a \sin \left(\frac{2 \pi c t}{\lambda}\right) \cos \left(\frac{2 \pi x}{\lambda}\right)

, which of the following statements is wrong

View answer and explanation

Correct option: D

The unit of

\mathrm{c} / \lambda

is same as that of

x / \lambda

Option D is wrong because

\frac{{x}}{{λ}}

is dimensionless, while

\frac{{c}}{{λ}}

has the dimensions of inverse time.

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