Question

Answer the Attached question ​

Answer 1

Defect: hypermetropia
Lens:convex lens
Focal length: P=1/f
P=0.5D
f=1/P
=1/0.5
=10/5( multiply by 10 to remove decimal)
=2 m
2*100 to make it cm
Focal length 200com

Answer 2

i)The lens used is convex lens!

ii)Surabhi is suffering from Hyperopia.

iii)P=1/f

f=1/P

=1/0.5

=2

I hope it will be helpful..