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.

Asked by Jai Gupta | 1st Nov, 2013, 12:05: AM

Expert Answer:

When light is incident parallel on a concave mirror, it gets reflected onto the focus. Hence, the image is formed at the focus.
Thus, the focal length is f = 12 cm.
 
Now, radius of curvature is twice the focal length.
 
R = 2f = 24 cm

Answered by Romal Bhansali | 1st Nov, 2013, 09:00: AM

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