Sushil went to an eye dpecialist for check up. He prescribed him to use spectacle lens of +0.5D power
apparagarwal789:
What we have to find ???
Is it focal length
Or type of lens
Answers
Answered by
3
Power = 1/ focal length (in metre)
So, +0.5 = 1 / f
f = 1 / 0.5
f = +2 metre
Type of lens ------> convex.
Defect of vision -------> hypermetropia .
Answered by
1
Answer: the defect of vision he is suffering from is myopia
The focal length is 2m
Explanation:f =1/f.
=1/0.5
=2
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