Physics - Geometrical Optics Question with Solution | TestHub
PhysicsGeometrical OpticsReflection at plane surfaceMedium2 minQB
PhysicsMediumsingle choice
A student holds a hand plane mirror to observe the back of her head while standing in front of and looking into a wall plane mirror. If she is standing 4 ft away from wall mirror in front of the wall mirror and she holds the hand mirror vertically 1 ft behind her head, she will see the back of her head approximately how far behind the wall mirror?
Options:
Answer:
A
Solution:
Back of her head is 4 ft from the wall mirror.
The hand mirror is 1 ft behind her head, so it is 5 ft from the wall mirror.
Its image of the back of her head is 1 ft behind the hand mirror, so 6 ft from the wall mirror.
The wall mirror shows this 6 ft behind itself.
Ans. (A)
Stream:JEESubject:PhysicsTopic:Geometrical OpticsSubtopic:Reflection at plane surface
⏱ 2mℹ️ Source: QB
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