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Laws of Reflection

Assertion :Co...

Question

Assertion :Concave mirror always forms a virtual image. Reason: Focal length of a mirror is half of the radius of curvature.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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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

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Assertion is incorrect but Reason is correct

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Solution

The correct option is D Assertion is incorrect but Reason is correct
Concave mirrors are capable of forming both real and virtual images.
For a concave mirror in air, the magnitude of the focal length is equal to the radius of curvature of the mirror divided by two.
i.e., $f = \frac{R}{2}$ , where $R$ is the radius of curvature.

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