Homework Help? Science light through lens stuff 10 points

Question

hey guys, ill give 10 points,,, need this soon...

Summarise in words the circumstances in which:

a. a real image (on a screen) is obtained

b.a virtual image (one that cannot be ‘caught’ on a

screen) is obtained

c. If time permits, repeat for a convex lens of different

focal length.

ty for your help... i was away for a week of class and idk what's happening atm. thanks in advance.

Answer 1

(a)

A real image is obtained from a convex lens when the distance from the object to the lens exceeds the focal length of the lens.

(b)

A virtual image is obtained from a convex lens when the distance from the object to the lens is less than the focal length of the lens.

(c)

The focal length of the lens does not change either of the answers (a) and (b).

With a diverging lens, the image is virtual in both cases (a) and (b).