Sunlight is incident on a concave mirror parallel to its principal axis. The image of the sun is formed 15 cm from the pole. Calculate the radius of curvature of the mirror.

Open in App

Solution

The rays parallel to the principal axis pass through the focus after reflection. Therefore, an image of the mirror, f = 15 cm.

Radius of curvature, r = 2f = 2 $\times$ 15 = 30 cm

Suggest Corrections

Similar questions

Q. Sunlight is incident on a concave mirror, parallel to its principal axis. The image is formed at a distance of 12 cm from the pole. Find the radius of curvature of the mirror.

Sun rays are incident on a concave mirror parallel to its principal axis. If the image of the sun is formed at 12 cm distance from a pole of the mirror. Find its radius of curvature.

The radius of curvature of a concave mirror is 10 cm. If I want to capture the image of the sun, at what distance from the pole of the mirror would an image be formed?

Q. An object is kept on the principal axis of a concave mirror of focal length

10

cm, at a distance of

15

cm from its pole. The image formed by the mirror is?

Q. A point object at

15 cm

from a concave mirror of radius of curvature

20 cm

is made to oscillate along the principal axis with amplitude

2 mm .

The amplitude of its image will be

Join BYJU'S Learning Program

Sunlight is incident on a concave mirror parallel to its principal axis. The image of the sun is formed 15 cm from the pole. Calculate the radius of curvature of the mirror.

The rays parallel to the principal axis pass through the focus after reflection. Therefore, an image of the mirror, f = 15 cm. Radius of curvature, r = 2f = 2 × 15 = 30 cm

The rays parallel to the principal axis pass through the focus after reflection. Therefore, an image of the mirror, f = 15 cm.

Radius of curvature, r = 2f = 2 $\times$ 15 = 30 cm