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NEET UG PHYSICS MCQ: RAY OPTICS
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An object is placed 21 cm in front of a concave mirror of radius of curvature 10 cm. A glass slab of thickness 3 cm and refractive index 3/2 is then placed close to the mirror the space between the object and the mirror. Distance of the near surface of the slab from the mirror is 1 cm. Find the position of the final image formed:-
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Correct option: A
7.67 cm
Option A (7.67 cm) is correct. The shift due to the glass slab needs to be calculated, and then the mirror formula is applied to find the final image position.
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Statement-A: The minimum distance between an object and its real image formed by a convex lens is .
Statement-B: The distance between an object and its real image is minimum when its magnification is -1. Assertion: We cannot produce a real image by plane or convex mirrors under any circumstances.
Reason: The focal length of a convex mirror is always taken negative. If both the object and image are at infinite distance from a refracting telescope its magnifying power will be equal to
Statement-B: The distance between an object and its real image is minimum when its magnification is -1. Assertion: We cannot produce a real image by plane or convex mirrors under any circumstances.
Reason: The focal length of a convex mirror is always taken negative. If both the object and image are at infinite distance from a refracting telescope its magnifying power will be equal to