Magnifying power m of a telescope is the ratio of the angle b subtended
at the eye by the image to the angle a subtended at the eye by the
object o
e
f
m
f
=αβ
=
where f0 and fe are the focal lengths of the objective and eyepiece,
respectively Rationalised 2023-24
Ray Optics and
Optical Instruments
249
EXERCISES
9 1
A small candle, 2