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Oscillations

A standing wa...

Question

A standing wave is given by the equation $x = 10 s i n 5 π t c o s 3 x$ . The amplitude of the wave will be

A

a constant at all times

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B

will be increasing as t increases

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C

will be decreasing as t increases

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D

will fluctuate at x increases

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Solution

The correct option is D will fluctuate at x increases
The amplitude of the stationary wave is $10 c o s 3 x$ and this fluctuates as x increases
The correct option is (d)

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