MHT CET Physics question
An object is located on a wall, its image of equal size is to be obtained on a parallel wall with the help of a convex lens. The lens is placed at a distance 'd' in front of the second wall. The required focal length of the lens is [MHT-CET 2020]
Answer: (D)
Solution
Equal size means ; the image distance is , so and only (the
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