Question

Answer above attached question. .......with explanation.



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Answer 1

Answer:

D is incorrect

Explanation:

C here stands for velocity of wave(unit is m/s)

Lambda here stands for wavelength (unit is m)

X stands for distance (unit is m)

T stands for time period (unit is s)

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Answer 2

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Option (d) is incorrect.

$\huge{ \red{ \underline{ \rm{ \blue{Explanation:-}}}}}$

$2 \pi \: \frac{ct}{ \lambda}$Is dimension less

$2 \pi \: \frac{x}{ \lambda}$Is dimension less.

$t = second \: x = m \\ c = m.s { }^{ - 1} \\\lambda = m \\ \lambda = m$

Hence option (d) is incorrect.