Question
When a ray of light strikes a mirror perpendicularly to its surface, the angle of reflection is(A) $0^{\circ}$(B) $45^{\circ}$(C) $60^{\circ}$(D) $90^{\circ}$
Step 1
This means that the angle at which the light ray strikes the mirror is the same as the angle at which it is reflected. Show more…
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A ray of light strikes a plane mirror $M$ at an angle of $45^{\circ}$ as shown in the figure. After reflection, the ray passes through a prism of refractive index $1.5$ whose apex angle is $4^{\circ}$. The total angle through which the ray is deviated is (a) $90^{\circ}$ (b) $91^{*}$ (c) $92^{*}$ (d) $93^{*}$
Ray Optics and Optical Instruments
Round 2
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