1.

A concave mirror of radius of curvature 20 cm forms a image of the sun. The diameter of the sun subtends an angle 1 degree on the earth. Then the diameter of the image is (in cm)(a) 2pi/9 (b) pi/9 (c) 20 (d) pi/18

Answer» A concave mirror of radius of curvature 20 cm forms a image of the sun. The diameter of the sun subtends an angle 1 degree on the earth. Then the diameter of the image is (in cm)
(a) 2pi/9 (b) pi/9 (c) 20 (d) pi/18


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