The distance between two consecutive crests in a wave train produced in string is $5 m$ . If two complete waves pass through any point per second, the velocity of wave is :

2.5 m / s

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5 m / s

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10 m / s

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15 m / s

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Solution

The correct option is C. $10 m / s$
Given,
Wavelength = $λ = 5 m$ (distance between two consecutive crest in the wave)
Frequency = $f = 2 H z$ (complete waves passing through any point per second)
We know that, the velocity (v) of wave is given by,
$v = f λ$
$v = 2 \times 5 = 10 m / s$
$v = 10 m / s$
The correct option is C.

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The distance between two consecutive crests in a wave train produced in string is 5m. If two complete waves pass through any point per second, the velocity of wave is :

The correct option is C. 10 m/sGiven,Wavelength = λ=5m (distance between two consecutive crest in the wave)Frequency = f=2Hz (complete waves passing through any point per second)We know that, the velocity (v) of wave is given by,v=fλv=2×5=10m/sv=10m/sThe correct option is C.

The distance between two consecutive crests in a wave train produced in string is $5 m$ . If two complete waves pass through any point per second, the velocity of wave is :