You are given three lens -L-1- -L-2- and -L-3- each of focal length 10 cm- An object is kept 15 cm in front of -L-1- as shown- The final real image is formed the focus -I- of -L-3- Find the separations between -L-1- -L-2- and -L-3-

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Toppr Admin · Accepted Answer

The-xA0-separations-xA0-between the lenses will be as-xA0-follows-Distance between L2 and L3-xA0-doesn-x2019-t-xA0-matter as the image formed by L2 is at infinity so that X2 can take any value-Image by L3 is formed at the focus- So the object should lie at infinity for L3-So-xA0-L2 will form image at-xA0-infinity and-xA0-the-xA0-object -xA0-for L2 -xA0-should be at its focus-But we-xA0-have seen above that the image-xA0-by L1 is formed at 15cm right of L1 which is at 15cm left of L2-So- Distance between L1-L2-15-10-25cm

You are given three lens L1,L2 and L3 each of focal length 10cm. An object is kept at 15cm in front of L1, as shown. The final real image is formed at the focus ′I′ of L3. Find the separations between L1,L2 and L3.

You are given three lens $L_{1}, L_{2}$ and $L_{3}$ each of focal length $10 c m$ . An object is kept at $15 c m$ in front of $L_{1}$ , as shown. The final real image is formed at the focus $^{'} I^{'}$ of $L_{3}$ . Find the separations between $L_{1}, L_{2}$ and $L_{3}$ .