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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsReflection at plane surfaceEasy2 minPYQ_2020

PhysicsEasysingle choice

There are two plane mirrors placed at some angle $θ$ with each other. A ray incident on the first mirror travels parallel to the second mirror after reflection and it travels parallel to the first mirror after two successive reflections. Find angle $θ$ between the mirrors.

Options:

Answer:

Solution:

$δ = 90 + α - θ$

$90 + α - θ = θ$ and $90 - α = θ$

$180 - θ = 2 θ$

$θ = 60 °$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Geometrical OpticsSubtopic:Reflection at plane surface

⏱ 2mℹ️ Source: PYQ_2020

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