A) 84 cm
B) 100 cm
C) 124 cm
D) 164 cm
Correct Answer: D
Solution :
\[m=\frac{{{f}_{o}}}{{{f}_{e}}}=\frac{100}{2}=50\]cm Hence length of terrestrial telescope \[={{f}_{o}}+{{f}_{e}}+4f\]\[=80+4+4\times 20=164\ cm\]You need to login to perform this action.
You will be redirected in
3 sec