F1 and F2 are focal lengths of objective and eyepiece respectively of the telescope. The angular tnagnification fof the given telescope is equal to:
A. \(\frac{\mathrm{F}_{1}}{\mathrm{~F}_{2}}\)
B. \(\frac{\mathrm{F}_{2}}{\mathrm{~F}_{1}}\)
C. \(\frac{\mathrm{F}_{1} \mathrm{~F}_{2}}{\mathrm{~F}_{1}+\mathrm{F}_{2}}\)
D. \(\frac{\mathrm{F}_{1}+\mathrm{F}_{2}}{\mathrm{~F}_{1} \mathrm{~F}_{2}}\)
Answer:A
F1 and F2 are focal lengths of objective and eyepiece respectively of the telescope. The angular tnagnification fof the given telescope is equal to:
A. \(\frac{\mathrm{F}_{1}}{\mathrm{~F}_{2}}\) B. \(\frac{\mathrm{F}_{2}}{\mathrm{~F}_{1}}\) C. \(\frac{\mathrm{F}_{1} \mathrm{~F}_{2}}{\mathrm{~F}_{1}+\mathrm{F}_{2}}\) D. \(\frac{\mathrm{F}_{1}+\mathrm{F}_{2}}{\mathrm{~F}_{1} \mathrm{~F}_{2}}\)