Question

formula of lens combination convex+concave​

Answer 1

Answer:

If L2 forms an image I2 of this virtual object at a distance q2 then p2. If f1 > f2 the combined lens behaves as a concave lens. If f2 > f1 the combined lens behaved as a convex lens. ... If both lenses are convex then the combined lens will behave like a convex lens.

Answer 2

Answer:

.

Explanation:

If L2 forms an image I2 of this virtual object at a distance q2 then p2. If f1 > f2 the combined lens behaves as a concave lens. If f2 > f1 the combined lens behaved as a convex lens. ... If both lenses are convex then the combined lens will behave like a convex lens.