A refracting astronomical telescope has an objective of focal length and an eyepiece…

PHYSICS · Single correct · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments

Problem

A refracting astronomical telescope has an objective of focal length

1.2\,\text{m}

and an eyepiece of focal length

4\,\text{cm}

. What is its magnifying power in normal adjustment? (a)

+6.25

(b)

-30

(c)

+30

(d)

+0.033