Parallel beam of light parallel to the principal axis of a lens falls on a lens of focal length 50 cm. After passing through the first lens they pass through another coaxially mounted convex lens of focal length 50 cm placed 150 cm from the first lens. After passing through the second lens, the rays converge at a distance of ________________ from the first lens.
Parallel beam of light parallel to the principal axis of a lens falls on a lens of focal length 50 cm. After passing through the first lens they pass through another coaxially mounted convex lens of focal length 50 cm placed 150 cm from the first lens. After passing through the second lens, the rays converge at a distance of ________________ from the first lens.