Question

An object 2 cm in size is placed 30 cm in front of a concave mirror of focal length 15 cm. What will be the nature and the size of the image formed? 

(a) real, inverted and same size as the object

(b) Virtual, erect and same size as the object

(c) Real, inverted and enlarged sized

(d) Virtual, erect and and enlarged sized

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Answer 1

Answer:

Explanation:

For a concave mirror, image size is same as the object size when it is placed at the center of curvature. Since radius of the mirror is twice the focal length, center of curvature lies at a distance of 30 cm from the pole. Hence, an object kept at 30 cm will produce an image of the same size as that of the object.