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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsReflection at plane surfaceEasy2 minPYQ_2020

PhysicsEasynumerical

A point object is moving with a speed $v$ in front of an arrangement of two mirrors as shown in figure. If the velocity of image in mirror $M_{1}$ with respect to image in mirror $M_{2}$ is $n(v sin θ),$ find $n$

Answer:

2.00

Solution:

Angle between $v_{I_{1}} & v_{I_{2}} is 2 θ$ . Their magnitudes isv.

$∴ v_{I_{1}} v_{I_{2}} = | {\vec{v}}_{I_{1}} - {\vec{v}}_{I_{2}} | = \sqrt{v^{2} + v^{2} - 2 v v \cos 2 θ}$

$= 2 v sin θ$

Subject:PhysicsTopic:Geometrical OpticsSubtopic:Reflection at plane surface

⏱ 2mℹ️ Source: PYQ_2020

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