CBSE Class 10 Answered
a person cannot see objects beyond a distace of 50 cm.find the power of lens he should use to restore proper vision.
Asked by archita123 | 19 Feb, 2016, 11:14: PM
Expert Answer
The defect is myopia.
The distance of far point = 50 cm
For correcting far point,
u = -∞
v= -50 cm
To view distant objects a concave lens of focal length -50 cm should be used.
The -ve sign indicates that it is a concave lens.
Answered by Faiza Lambe | 20 Feb, 2016, 09:28: AM
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