alleryThe mirror equation relates u, v and f as
A1/v − 1/u = 1/f
B1/u + 1/v = 1/f
Cu v = f
Du + v = f
Answer & Solution
Correct answer: B. 1/u + 1/v = 1/f
1. syllabus mirror equation: 1/v + 1/u = 1/f.
2. With the sign convention, this works for both concave (f < 0 in Cartesian) and convex mirrors.
3. (B) is the lens formula — a common confusion.
_Source: syllabus Physics Part II, Ch 9 §9.2.3_
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