Question

56. (a) Suggest one point of a lens through which a light ray passes
undeviated.
(b) The power of a lens is. 4D. Analyse this value and state any
two characteristics of the
​

Answer 1

Answer:

(a)At center of lens,passing through principal axis.

Explanation:

(b)p=4D

f=0.25meters

1)This lens is used to correct hypermetropia.

2)and the lens is concave lens