what is focal power of lens of mirror
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Explanation: Focal power of a spherical mirror or lens:It is the degree to which a lens or mirror diverges or converges a light. Power of a lens or mirror is defined as reciprocal of focal length of a mirror or lens. If the focal length is large then the power of lens or mirror is small
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Explanation:
Power of a lens is defined as reciprocal of focal length of a lens.
If the focal length is large then the power of lens is small.
If the focal length is small then the power of lens is large.
Mathematical representation,
f=Focal length (in meter)
S.I unit of power is Diopters.
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