A point object is placed at a distance of 25 cm from a convex lens of – McqOptions

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1.	A point object is placed at a distance of 25 cm from a convex lens of focal length 20 cm. If a glass slab of thickness t and refractive index 1.5 is inserted between the lens and the object, the image is formed at infinity. The thickness t is
A.	10 cm
B.	5 cm
C.	20 cm
D.	15 cm
Answer» E.

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