A) -0.67 D
B) +0.67D
C) +1.5D
D) -1.5D
Correct Answer: A
Solution :
[c] d= 1.5m The concave lens of focal length \[f\] is used to restore the proper vision. So, \[\frac{1}{f}=-\frac{1}{d}=-\frac{1}{1.5}\,\,m\] or \[f=-1.5\,m\] \[\therefore \] Power of lens, \[P=\frac{1}{f}=-\frac{1}{1.5}=-0.67\]You need to login to perform this action.
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