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Assertion : Intensity pattern of interfe...

Assertion : Intensity pattern of interference and diffraction are not same.
Reason : When there are few sources of light, then the result is usually called interference but if there is a large number fo them, the word diffraction is more often used.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Text Solution

AI Generated Solution

The correct Answer is:
To analyze the given assertion and reason, let's break down the problem step by step. ### Step 1: Understand the Assertion **Assertion**: Intensity pattern of interference and diffraction are not the same. - **Explanation**: In interference, the intensity of bright fringes remains constant across the pattern. This means that all bright spots have the same intensity. In contrast, in diffraction, the intensity of light varies, typically decreasing as you move away from the central maximum. ### Step 2: Understand the Reason **Reason**: When there are few sources of light, the result is usually called interference, but if there are a large number of them, the word diffraction is more often used. - **Explanation**: Interference occurs when two or more coherent light sources overlap, leading to a pattern of constructive and destructive interference. This is typically observed with two sources. Diffraction, on the other hand, involves the bending of waves around obstacles or through openings, and it can be observed when waves emanate from many points in a wavefront, leading to a more complex pattern. ### Step 3: Compare the Assertion and Reason - The assertion is true: the intensity patterns of interference and diffraction are indeed different. - The reason is also true: interference is typically associated with a few sources, while diffraction is associated with many sources. However, the reason does not correctly explain the assertion. ### Conclusion Both the assertion and reason are true, but the reason does not provide a correct explanation for the assertion. Therefore, the correct answer is that both the assertion and reason are true, but the reason is not the correct explanation of the assertion. ### Final Answer The correct option is: Both assertion and reason are true, but the reason is not the correct explanation of the assertion. ---
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