The radius of curvature of a concave mirror is 10 cm. At what distance from the pole of the mirror would an image of the sun be formed?

10 cm

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5 cm

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20 cm

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Solution

The correct option is B
5 cm

If the object is placed at infinity, the image is formed at the focus.

We know that the focal length is half the radius of curvature.
$F = \frac{R}{2}$ $⟹$ f = 5 cm

So the image of the sun is at 5 cm from the pole.

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The radius of curvature of a concave mirror is 10 cm. At what distance from the pole of the mirror would an image of the sun be formed?

The correct option is B 5 cm If the object is placed at infinity, the image is formed at the focus. We know that the focal length is half the radius of curvature. F=R2 ⟹ f = 5 cm So the image of the sun is at 5 cm from the pole.

The correct option is B
5 cm

If the object is placed at infinity, the image is formed at the focus.

We know that the focal length is half the radius of curvature.
$F = \frac{R}{2}$ $⟹$ f = 5 cm

So the image of the sun is at 5 cm from the pole.