Question

6. Power of a lens is -4D, then its focal length is
a) 4m
b) -40m
c) -0.25 m
d) -2.5 m

7. In a myopic eye, the image of the object is
formed
a) behind the retina b) on the retina
c) in front of the retina d) on the blind spot

8. The eye defect 'presbyopia' can be corrected
by
a) convex lens b) concave lens
c) convex mirror d) Bi focal lenses​

Answer 1

Answer:

Your answer are as follows:

Explanation:

6.The correct option is c (-0.25).

7..The correct option is c(in front of retina)

8..The correct option is d (Bifocal lens)

Hope this helps..

Answer 2

Answer:

Myself Mahira and Nice to meet you

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