The displacement-time graph for a particle in a wave is shown below. Then the frequency of the wave is

$1 H z$

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$0.1 H z$

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$0.01 H z$

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$10 H z$

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Solution

The correct option is B
$0.1 H z$

In the given displacement-time graph, it shows the variation of displacement of a particle of the medium with time at a given position, when a wave propagates through the medium.

Here, the amplitude (a) is $4 c m$ and its time period (T) is $10 s$ .
We know frequency, $F = \frac{1}{T}$

So the frequency, $F = \frac{1}{10} = 0.1 H z$

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