A) 9.2 cm
B) 10.5 cm
C) 5.6 cm
D) 7.5 cm
Correct Answer: D
Solution :
\[R=-30\,cm\Rightarrow f=-15\,cm\] \[O=+2.5\,cm,\] \[u=-10\,cm\] By mirror formula \[\frac{1}{-15}=\frac{1}{v}+\frac{1}{(-10)}\Rightarrow v=30\,cm.\] Also \[\frac{I}{O}=-\frac{v}{u}\Rightarrow \frac{I}{(+2.5)}=-\frac{30}{(-10)}\]\[\Rightarrow I=+7.5\,cm.\]You need to login to perform this action.
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