Question

Object distance and image distance of a lens are ‒60 cm and ‒20 cm respectively,

then the magnification of lens will be
A). ‒ 0.33
B). + 3.0

C).+ 0.33
D).+ 4.0​

Answer 1

Explanation:

thedistancebetweenpoints(3,3)

and(3,−7)is

(3−3)

2

+(3+7)

2

=

0

2

+10

2

=10

so option B) 10 is the correct answer