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Standard XII

Chemistry

Nature of Electromagnetic Radiation

The diagram b...

Question

The diagram below shows a string vibrating in such a way that a standing wave pattern is set up as pictured. The device vibrating the string is set at a frequency of 15 Hz.
What is the speed of the waves as they move along the string?

15 m/s

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45 m/s

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5 m/s

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3.0 m/s

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0.60 m/s

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Solution

The correct option is A 15 m/s
Given : $ν = 15$ Hz
From figure, wavelength of the wave $λ = \frac{3.0}{3} = 1.0$ m
Thus speed of the wave $v = ν λ = 15 \times 1.0 = 15$ m/s

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The diagram below shows a string vibrating in such a way that a standing wave pattern is set up as pictured. The device vibrating the string is set at a frequency of 15 Hz.What is the speed of the waves as they move along the string?

The correct option is A 15 m/sGiven : ν=15 HzFrom figure, wavelength of the wave λ=3.03=1.0 mThus speed of the wave v=νλ=15×1.0=15 m/s

The diagram below shows a string vibrating in such a way that a standing wave pattern is set up as pictured. The device vibrating the string is set at a frequency of 15 Hz.
What is the speed of the waves as they move along the string?

The correct option is A 15 m/s
Given : $ν = 15$ Hz
From figure, wavelength of the wave $λ = \frac{3.0}{3} = 1.0$ m
Thus speed of the wave $v = ν λ = 15 \times 1.0 = 15$ m/s