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Struggling with Ray Optics problems? PracBee presents a carefully curated set of 25 solved examples that break down complex concepts into easy-to-understand solutions. Our comprehensive guide covers critical topics including reflection, refraction, mirrors, lenses, and optical instruments. Each example features detailed explanations, precision ray diagrams, and systematic problem-solving approaches. Perfect for JEE Main, Advanced, NEET, and board exam preparation, these solutions are crafted by IIT experts to help students tackle both theoretical and numerical problems effectively.
Correct Answer : D
9. A luminous object is kept is at a distance D from a screen. In order to obtain the image of the same size as the object, the focal length of a convex lens to be inserted between them must be-
A. D
B. D/2
C. 2D
D. D/4
Solution:
Correct Answer : D
Correct Answer : A
Correct Answer : B
Correct Answer : A
Answer: 90
Senior Physics Faculty
B.Tech. IIT-Delhi (2007)
IIT Delhi. 15+ Years of experience as Physics Faculty and Author
