Physics - Geometrical Optics Question with Solution | TestHub
PhysicsGeometrical OpticsRefraction at curved surface/LensMedium2 minQB
PhysicsMediumsingle choice
. The two lenses shown are illuminated by a beam of parallel light from the left. Lens B is then moved slowly toward lens A. The beam emerging from lens B is:
Options:
Answer:
A
Solution:
Initially the lenses are separated by (afocal combination), so the parallel beam emerges parallel. As B is moved toward A, the converging beam from A crosses its focus before reaching B and arrives at B diverging from that point, so the emergent beam becomes diverging. Hence (A): initially parallel and then diverging.
Stream:JEESubject:PhysicsTopic:Geometrical OpticsSubtopic:Refraction at curved surface/Lens
⏱ 2mℹ️ Source: QB
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