In Fig., there are two convex lenses `L_1 and L_2` having focal lengths `F_1` and `F_2` respectively. The distance between `L_1` and `L_2` will be : .A. `F_1`B. `F_2`C. `F_1 + f_2`D. `F_1 - F_2`

In Fig., there are two convex lenses `L_1 and L_2` having focal length

1.	In Fig., there are two convex lenses `L_1 and L_2` having focal lengths `F_1` and `F_2` respectively. The distance between `L_1` and `L_2` will be : .A. `F_1`B. `F_2`C. `F_1 + f_2`D. `F_1 - F_2`
Answer» Correct Answer - C `L_1` will converge the parallel ray at its focus , `L_2` will render it parallel only when the refracted ray starts from the focus of `L_2`. `:.` Distance between `L_1 L_2 = F_1 + F_2`.

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In Fig., there are two convex lenses `L_1 and L_2` having focal lengths `F_1` and `F_2` respectively. The distance between `L_1` and `L_2` will be : .A. `F_1`B. `F_2`C. `F_1 + f_2`D. `F_1 - F_2`

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