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A point source of light is placed in front of a plane mirror as shown in the figure.
Determine the length of reflected path of light on the screen $\sum_{}$ .

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detailed solution

Correct option is C

Ray diagram is as shown in figure: Here, SOOP=PMRM⇒RM=2LAlso, STTQ=QMSM ⇒ SM=L2RS=RM−SM=3L2

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A point source of light is placed in front of a plane mirror as shown in the figure.Determine the length of reflected path of light on the screen ∑ .

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A point source of light is placed in front of a plane mirror as shown in the figure.
Determine the length of reflected path of light on the screen $\sum_{}$ .