Question

Tell me on the basis of 11 class define Apparture and focus of mirror.​

Answer 1

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APPARTURE

◆That portion of a mirror from which the reflection of light actually takes place is called the aperture of the mirror. In fact, aperture of a mirror represents the size of the mirror.

FOCUS OF MIRROR

◆A principal focus or focal point is a special focus: For a lens, or a spherical or parabolic mirror, it is a point onto which collimated light parallel to the axis is focused. Since light can pass through a lens in either direction, a lens has two focal points – one on each side.

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