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Q.

Principal focus of spherical mirrors present on principal axis.

 

 

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a

True

b

False

answer is A.

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Detailed Solution

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Principal focus is the point on the principal axis, where a parallel beam of light, parallel to the principal axis after reflection, converges in the case of a concave mirror and appears to diverge from a point in the case of a convex mirror.

It is denoted by capital letter F.

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