Define focal power of a spherical mirror.
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Focal power of a spherical mirror or lens:It is the degree to which a lens or mirror diverges or converges a light. Or. 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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Focal power of a spherical mirror or lens:It is the degree to which a lens or mirror diverges or converges a light. Or. 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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