A) \[+5D\]
B) \[+2D\]
C) \[+0.5D\]
D) \[-0.5D\]
E) \[-2D\]
Correct Answer: B
Solution :
Power of a lens is inverse of focal length (in metres) \[P=\frac{1}{f}\] Given, \[f=50\text{ }cm\] \[\therefore \] \[P=\frac{100}{50}=+2D\]You need to login to perform this action.
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