Physics · Light - Reflection and Refraction
P, Q, R and S are four points on the reflective surface of a spherical concave mirror. If r1, r2, r3 and r4 are the distances of the centre of curvature from points P, Q, R and S respectively, then the correct relation is:
- 1r1 = r2, r3 = r4 and r2 ≠ r3
- 2r1 > r2 > r3 > r4
- 3r1 < r2 < r3 < r4
- 4r1 = r2 = r3 = r4✓
Correct answer
r1 = r2 = r3 = r4
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