Physics, asked by shikharsharma9001, 9 months ago

Define the principal focus of a concave mirror. The radius of curvature of a spherical mirror is 20
cm. find its focal length

Answers

Answered by SaanchiSingh1225

5

Answer:

♥️♥️ANSWER♥️♥️

Explanation:

PRINCIPAL FOCUS

Principal focus is that point on the principal axis at which, a beam of light which is incident parallel to the principal axis converges after reflection from the concave mirror. A concave lens of focal length 15 cm forms an image 10 cm from the lens.

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