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Question

In the case of convex mirrors, the focal point lies behind the mirror because:

A
centre of the spherical surface lies in front of the mirror
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B
centre of the spherical surface lies behind the mirror
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C
pole lies beyond the centre of the spherical surface
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D
pole lies before the centre of the spherical surface
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Solution

The correct option is B centre of the spherical surface lies behind the mirror
In case of convex mirrors, the outer curved portion of the spherical surface is polished which acts as a reflecting surface.
Thus, the centre of the spherical surface lies behind the mirror.
The focal point is at centre of line joining the pole and centre of curvature. Hence, the focal point lies behind the mirror.

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