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Ratio of radius of curvature to that of focal length

Posted by Ananditha Bharadwaj 5 years, 3 months ago

CBSE > Class 08 > Science

1 answers

Meghna Thapar 5 years, 3 months ago

The distance from the pole to the focal point is called the focal length (f). The focal length of a spherical mirror is then approximately half its radius of curvature. It is important to note up front that this is an approximately true relationship. Analytically, the focal length is described by the lens maker's equation: 1/f = (n - 1)(1/R1 + 1/R2), where R1 and R2 are the radii of curvature, f is the focal length, and n is the index of refraction. Verify that your earlier measurements are consistent with this equation.

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CBSE > Class 08 > Science