Question

A telescope has an objective lens of focal length 200 cm and an eye piece with focal length 2 cm.

Answer 1

Answer:

5 cm

Explanation:

Answer 2

Answer:

Correct Answer is 5 cm

Explanation:

Solution:

Magnification of the objective lens

m = I/O = v0/u0=f0/u0xp.

Putting the values we get :

I/50=(200X10-2/2X103)XP: I =(50x200x10-2/2x103)xp =0.05

m=5 cm..Hence the Answer.