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Assertion : All bright interference band...

Assertion : All bright interference bands have same intensity.
Reason : Because all bands do not receive same light from two sources.

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 solve the assertion and reason question, we need to analyze both the assertion and the reason provided. ### Step 1: Understand the Assertion The assertion states that "All bright interference bands have the same intensity." In the context of wave optics, particularly in interference patterns created by two coherent sources, bright bands (or fringes) are formed due to constructive interference of light waves. **Hint:** Recall the principle of superposition and how constructive interference occurs. ### Step 2: Analyze the Reason The reason given is "Because all bands do not receive the same light from two sources." This suggests that the intensity of the bright bands varies because they do not all receive equal contributions from the two sources. **Hint:** Consider how the distance from the sources affects the intensity of the light reaching each band. ### Step 3: Compare Assertion and Reason While it is true that bright bands are formed due to constructive interference, they are considered to have the same intensity under ideal conditions. However, the reason provided is incorrect because it implies that the intensity of the bands varies due to unequal contributions from the sources, which is not the case for bright bands in an ideal interference pattern. **Hint:** Think about the ideal conditions of interference and how they relate to the intensity of the bands. ### Step 4: Conclusion Based on the analysis: - The assertion is **true**: All bright interference bands do have the same intensity under ideal conditions. - The reason is **false**: While it is true that the bands do not receive the same amount of light from the two sources, this does not affect the intensity of the bright bands in an ideal scenario. Thus, the correct conclusion is that the assertion is true, but the reason is false. **Final Answer:** Assertion is true, Reason is false.
To solve the assertion and reason question, we need to analyze both the assertion and the reason provided. ### Step 1: Understand the Assertion The assertion states that "All bright interference bands have the same intensity." In the context of wave optics, particularly in interference patterns created by two coherent sources, bright bands (or fringes) are formed due to constructive interference of light waves. **Hint:** Recall the principle of superposition and how constructive interference occurs. ### Step 2: Analyze the Reason ...
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