Question

Light incident normally on a plane mirror
attached to a galvanometer coil retraces
backwards as shown in figure. A current in the
coil produces a deflection of 3.5º of the mirror.
What is the displacement of reflected spot of
light on a screen placed 1.5 m away ?
1.5 m​

Answer 1

Answer:

away from the lens? ... -1.5 m. M. Light incident normally on a plane mirror ... to a galvanometer coil retraces backwards as shown in Fig.

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