In the figure given below, there are two convex lenses L, and L2 having focal lengths F, and F2 respectively. The distance between L, and Ly will be

In the figure given below there are two convex lenses L1 and L2 having focal lengths F1 and F2 respectively. The distance between L1 and L2 will be

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 : .

In the figure shown, 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

In the figure shown, 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

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 :

If in Rmsden's eyepiece,the field lenses have focal lengths f_1 and f_2 respecrtively and separted by a distance d,then

Deduce the equivalent focal length of two convex lenses of focal lengths F_(1) and F_(2) when placed in contact.