Physics, asked by skandaartsmurali, 10 months ago

a person needs a lens having power -4.5D.name the eye defect.

Answers

Answered by sarwarkhan0194

0

Negative sign of power of lens indicates that focal length of the lens used for correction is negative. This means that concave lens is used for correction. Concave lens is used for the correction of myopia and hence, the person is suffering from myopia.

Answered by anurag2147

0

Answer:

P=1/f=-4.5=

f= -1/4.5 = -0.22

focal length is negative this so that lens is concave

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