Question

thye power of objective and eye piece of telescope are 0.5 diopter and 10 diopter respectively. The magnifying power of telescope is?
(a) 0.5
(b) 10
(c) 20
(d) 0.05

Answer 1

Magnifying power of telescope = focal length of objective/focal length of eyepiece = power of eyepiece/ power of objective

Power of objective = 0.5 D
Power of eyepiece = 10 D

Magnifying Power of telescope = power of eyepiece/ power of objective = 10/0.5 = 20

Answer is C.

Answer 2

the answer is (c)
hope its helpfull for you dear