A person can see clearly only upto a distance of 25 cm . He wants to read a book placed at a distance of 50 cm . What kind of lens does he require for his spectacles and what must be its power
Text Solution
Verified by ExpertsThe correct answer is:
C
For correcting myopia, concave lens is used and for lens.
u = wants to see 
v = can see 
From 
So power 
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