A) fo = 45 cm and fe = ? 9 cm
B) fo = 7.2 cm and fe = 5 cm
C) fo = 50 cm and fe = 10 cm
D) fo = 30 cm and fe = 6 cm
Correct Answer: D
Solution :
In this case \[|m|\ =\frac{{{f}_{o}}}{{{f}_{e}}}=5\] .... (i) and length of telescope \[={{f}_{o}}+{{f}_{e}}=36\] .... (ii) Solving (i) and (ii), we get fe = 6 cm,\[{{f}_{o}}=30\,cm.\]You need to login to perform this action.
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