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Assertion : Combination of lenses help...

Assertion : Combination of lenses helps to obtain diverging or converging lenses of desired magnification.
Reason : It enhances sharpness of the image.

A

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

B

If both assertion and reason are true and 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 question, we need to analyze both the assertion and the reason provided. ### Step 1: Understand the Assertion The assertion states that the combination of lenses helps to obtain diverging or converging lenses of desired magnification. - **Explanation**: When we combine lenses, we can achieve a specific magnification that may not be possible with a single lens. For example, combining two convex lenses can yield a higher overall magnification because the image produced by the first lens serves as the object for the second lens. The total magnification (M) can be calculated as the product of the individual magnifications of the lenses (M1 and M2). ### Step 2: Understand the Reason The reason states that combining lenses enhances the sharpness of the image. - **Explanation**: While it is true that combining lenses can lead to sharper images, this is not the primary purpose of combining lenses. The main goal is to achieve the desired magnification. Sharpness can be influenced by other factors, such as lens quality and alignment, but it is not the main reason for using a combination of lenses. ### Step 3: Evaluate the Relationship Now we need to evaluate the relationship between the assertion and the reason. - **Conclusion**: Both the assertion and the reason are true statements. However, the reason provided does not correctly explain why we combine lenses. The enhancement of sharpness is a secondary effect and not the primary reason for combining lenses. ### Final Answer Both the assertion and the reason are true, but the reason is not the correct explanation of the assertion. Therefore, the correct option is B. ---
To solve the question, we need to analyze both the assertion and the reason provided. ### Step 1: Understand the Assertion The assertion states that the combination of lenses helps to obtain diverging or converging lenses of desired magnification. - **Explanation**: When we combine lenses, we can achieve a specific magnification that may not be possible with a single lens. For example, combining two convex lenses can yield a higher overall magnification because the image produced by the first lens serves as the object for the second lens. The total magnification (M) can be calculated as the product of the individual magnifications of the lenses (M1 and M2). ### Step 2: Understand the Reason ...
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