In a laboratory four convex lenses `L_(1), L_(2), L_(3)` and `L_(4)` of focal lengths `2,4,6` and `8 cm` respectively are available. Two of these lenses form a telescope of length `10 cm` and magnifying power 4 . The objective and eye lenses areA. `L_(2),L_(3)`B. `L_(1),L_(4)`C. `L_(3),L_(2)`D. `L_(4),L_(1)`

In a laboratory four convex lenses `L_(1), L_(2), L_(3)` and `L_(4)` o

1.	In a laboratory four convex lenses `L_(1), L_(2), L_(3)` and `L_(4)` of focal lengths `2,4,6` and `8 cm` respectively are available. Two of these lenses form a telescope of length `10 cm` and magnifying power 4 . The objective and eye lenses areA. `L_(2),L_(3)`B. `L_(1),L_(4)`C. `L_(3),L_(2)`D. `L_(4),L_(1)`
Answer» Correct Answer - D To make telescope of higher magnifying power, `f_(o)` should be large `f_(e)` should be least.

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