JCECE SERIES Physics
Optical Instruments
1 previous year questions.
Volume: 1 Ques
Yield: Medium
High-Yield Trend
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2015 Chapter Questions 1 MCQs
01
PYQ 2015
medium
physics ID: jcece-20
A plano-convex glass lens of radius of curvature is placed at a distance a from a concave lens of focal length 40 cm. What should be the distance b of a point object O from plano-convex lens so that the position of final image is independent of a?
1
20 cm
2
60 cm
3
40 cm
4
30 cm