A) \[5cm/sec\] towards the mirror
B) \[4cm/sec\] towards the mirror
C) \[4cm/sec\] away from the mirror
D) \[9cm/\sec \] away from the mirror
Correct Answer: C
Solution :
\[{{v}_{i}}=-{{\left( \frac{f}{f-u} \right)}^{2}}.\,{{v}_{o}}\]\[=-\,{{\left( \frac{-24}{-24-(-60)} \right)}^{2}}\times 9\]= 4 cm/sec.You need to login to perform this action.
You will be redirected in
3 sec