A) \[4c{{m}^{2}}\]
B) \[6c{{m}^{2}}\]
C) \[2c{{m}^{2}}\]
D) \[8c{{m}^{2}}\]
E) \[9c{{m}^{2}}\]
Correct Answer: E
Solution :
Given focal length of concave mirror \[f=-15cm\] \[u=-20\text{ }cm\] Magnification \[m=\frac{f}{u-f}\] \[=\frac{-15}{-20+15}\] \[m=3\,cm\] The area enclosed by the image of the wire \[={{m}^{2}}\] \[=9\text{ }cm\]
You need to login to perform this action.
You will be redirected in
3 sec
