Question

in an experiment to measure the focal length of an equiconvex lens following measurements where made you equals to 0.3 CM

Answer 1

hey mate...

here is ur answer.


Focal length of a lens is given by:

1/f = (u-1) (1/r1 + 1/r2)

by the iven information we have got
r1 = r2= f = r

1/r = (u -1) (1/r + 1/r) 

or

u = 1/2 + 1
= 3/2
= 1.5