proportional to A

proportional to A2

proportional to 1/A2

independent of A

only (i)

both (ii) and (iii)

both (i) and (iii)

all are correct

4.5 J

9.0 J

12.0 J

18.0 J

zero potential energy and maximum kinetic energy

zero kinetic energy and maximum potential energy

maximum kinetic energy and maxi-mum potential energy

minimum kinetic energy and minimum potential energy

f

1/f

1/f2

f2