A) Equal to f
B) Between f and 2 f
C) Equal to 2 f
D) Greater than 2 f
Correct Answer: C
Solution :
An object is placed at C, \[\therefore \] \[u=-C=-2f\] Mirror formula, \[\frac{1}{f}=\frac{1}{u}+\frac{1}{v}\] For concave mirror, f = negative \[-\frac{1}{f}=\frac{-1}{2f}+\frac{1}{v},\frac{1}{v}=-\frac{1}{f}+\frac{1}{2f}\] \[\frac{1}{v}=\frac{-1}{2f}\Rightarrow v=-2f\]You need to login to perform this action.
You will be redirected in
3 sec