The graph in Fig. shows plot of variation of `v` with change in `u` for a concave mirror. Points plotted above the point `P` on the curve are for values of `v` :
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Options

A. smaller than `f`
B. smaller than `2 f`
C. larger than `2 f`
D. larger than `f` but less than `2 f`

Answer

C

Explanation

In Fig., atv `P, v = u`, which is possible only when `u = 2 f`
At any other point `Q` above `P, v gt 2 f`.
.