In the normal adjustment of a refracting telescope

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

Problem

In the normal adjustment of a refracting telescope, the magnifying power

M

(including sign) is given by (a)

M=1+\dfrac{f_o}{f_e}

(b)

M=-\dfrac{f_o}{f_e}

(c)

M=-\dfrac{f_e}{f_o}

(d)

M=\dfrac{f_o}{f_e}