If the focal length of the eye piece of a telescope is doubled, its magnifying power $(\mathrm{m})$ will be

Question

If the focal length of the eye piece of a telescope is doubled, its magnifying power $(\mathrm{m})$ will be, $2 \mathrm{~m}$, $3 \mathrm{~m}$, $\frac{\mathrm{m}}{2}$, $4 \mathrm{~m}$

MARKS App · Accepted Answer

Hints: $\mathrm{m}=\frac{-\mathrm{f}_0}{\mathrm{f}_{\mathrm{e}}}$ $\mathrm{m}^{\prime}=\frac{\mathrm{m}}{2}$

Search any question & find its solution

Looking for more such questions to practice?