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The equation of a wave travelling in a string can be written as $y = 3 cosπ (100 t - x)$ . Its wavelength is

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100 cm

2 cm

5 cm

None of the above

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detailed solution

Correct option is B

Comparing the given equation with y=acos(ω t−kx)We get k=2πλ=π⇒λ=2cm

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The equation of a wave travelling in a string can be written as y=3cosπ(100 t−x). Its wavelength is

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Ready to Test Your Skills?

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The equation of a wave travelling in a string can be written as $y = 3 cosπ (100 t - x)$ . Its wavelength is