Q.
The graph shows variation of $v$ with change in $u$ for a mirror. Points plotted above the point $P$ on the curve are for values of $v$
Ray Optics and Optical Instruments
Solution:
At $P, u=v$ which happened only when $u$ $=2 f$
At another point $Q$ on the graph (above $P)$
$v>2 f$
