Question

a person needs a lens of power -2.5 dioptres for correcting his vision. name the defect of vision he is suffering from.which lens will be using for the correction? also find the focal length of the lens​

Answer 1

Answer:

hey mate here is your answer

Explanation:

he is suffering from myopia

to rectify his defect concave lens must be used

WKT,

f=1/p

given that, p= -2.5

therefor, f= 1/-2.5

for your ease   multiply both the numerator and denominator by 10

so we get => 10/-25

= -0.4

please mark it as brainielist answer