Question

79)Fora normal human eye the near point is at...
a) 2.1cm b) 2.5cm c)25cm d)5cm
80)The image formed by ... lens is always virtual and small.
a) plane convex b) biconvex c) biconcave d) bifocal
81 )in a relaxed state the focal length of healthy eves ir​

Answer 1

Answer:

79 .c)25cm

80.concave

81.In relaxed state, focal length of a healthy eye is approximately 18.5 mm in case of an adult person.

Answer 2

Answer:

so Sorenson Southern southernmost so we app