Question

Optical axis of a thin equi-convex lens is the X-axis. The co-ordinate of a point
object and its image are (-20, cm, 1 cm) and (25 cm, -2 cm) respectively
(A) the lens is located at x = 5 cm
(B) the lens is located at x = -5 cm
(C) the focal length of the lens is 10 cm
(D) the focal length of the lens is 15 cm
A
B.
с
D​

Answer 1

Answer:

(A) the lens is located at x = 5 cm

Answer 2

Answer:

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Explanation:

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