Question

you have two lenses a and b of focal length 10 cm and minus 10 cm respectively .state the nature of each lens .which of the two lens will form in fortune and magnified image of an object placed from the lens ? draw a ray diagram showing the formation of the image in the above case?!!​

Answer 1

Answer:

lens a = convex

lens b = concave

Explanation:

lens a will form a virtual and magnified image when the object will be place between pole and focus

as shown in figure