Question

draw and label radius of curve, principal axis,focal length ,focus point in concave and convex mirror.​

Answer 1

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• Refer the attachment for the diagram.

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Know More -

In brief (the definitions of few basic terms related to spherical mirror) -

• Principal Axis - The line that joins the pole and centre of curvature of the spherical mirror.

• Pole - This is the geometrical central point or the reflecting spherical surface(called aperture). This is denoted by ( P ).

• Radius of curvature - The separation between the pole and the centre of curvature . [ PC = R ]

• Focus Point - The point on the principal axis,where all parallel rays meet after reflection. This is denoted by (F).

• Focal length - The length between the pole and focus point. Denoted by (f).

• Centre of Curvature - The reflecting surface of a spherical mirror form a part of sphere, which has a center which is known as centre of curvature. This is denoted by (C).

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