IIT JEE , AIEEE Forum - Physics , Optics

Mr.IITIAN007

The distance between an object and a convergent lens is m times the focal length of the lens.Then the linear magnification produced by the lens will be equal to:---------

(a) m+1
(b) m
(c) m^-1
(d) None of these

rphy

is it m+1?

magiclko

for a lens (1/ f) = (1/ v) - (1/u)

=> u/ f = u/ v - 1

=> u/ f = 1/M - 1

here u = mf,

thrfore

=> -m = 1/ M - 1

=> M = 1/ (1-m)

Mr.IITIAN007

Ya thanx expert.

Ask & Discuss Questions with Community & Experts