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Q.

Assertion (A): The images formed by total internal reflection are much brighter than those formed by mirrors or lenses

Reason (R) : There is no loss of intensity in total internal reflection

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a

Both (A) and (R) are true but (R) is not the correct explanation of (A)

b

Both (A) and (R) are true and (R) is the correct explanation of (A)

c

Both (A) and (R) are false

d

(A) is true but (R) is false

answer is A.

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Detailed Solution

During Total internal reflection we get intensity of incident light and reflected light are equal. But during Reflection from mirrors reflected rays will have less intensity when compared to intensity of incident rays. It happens due to absorption of energy by reflecting surface.

So we get images formed by total internal reflection are much brighter than those formed by mirrors or lenses.

Here we get Assertion (A) and Reason (R) are correct and R is correct explanation of (A)

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