Assertion :Diffraction takes place for all types of waves mechanical or non-mechanical, transverse or longitudinal. Reason: Diffraction's effect are perceptible only if wavelength of wave is comparable to dimensions of diffracting device.

Both Assertion are not correct and Reason is the correct

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect;Reason is not correct explanation for Assertion

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Both Assertion is correct and Reason are incorrect

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Diffraction is perceptible only when dimension of diffracting device is comparable to the wavelength diffracting, i.e. $d \sim λ$ .
However this is not the reason for diffraction to take place for all types of waves.

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