A thin convex lens forms the distinct image of anobject on a screen pl – InterviewSolution

1.	A thin convex lens forms the distinct image of anobject on a screen placed at a distance of 30 cm fromthe lens. When the lens is displaced 5 cm towardsthe screen, then in order to obtain distinct image thescreen is displaced 5 cm towards the lens. Find focal length of lens
Answer» A thin convex lens forms the distinct image of an object on a screen placed at a distance of 30 cm from the lens. When the lens is displaced 5 cm towards the screen, then in order to obtain distinct image the screen is displaced 5 cm towards the lens. Find focal length of lens

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