question_answer

           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                                                                    [CPMT 1987]

A)             Smaller then f

B)             Smaller then 2f

C)             Larger then 2f

D)             Larger than f

Correct Answer: C

Solution :

                   At P, u = v which happened only when u = 2f At another point Q on the graph (above P) v > 2f