Passage 3 (Questions 74-76) When two plane mirrors subtend an angle between them

MATHEMATICS · Single correct · CBSE · Mathematics · Proportional Reasoning-2 · Proportional Reasoning-2

Problem

Passage 3 (Questions 74-76) When two plane mirrors subtend an angle

\theta

between them, then a ray of light incident parallel to one of them retraces its path after

n

reflections such that

n\theta = c

(where

c

is a constant) The graph between

n

and

\theta

will (a) be continuous but not differentiable (b) be continuous and differentiable (c) Not be continuous (d) Can't say