There are many simulations on this site related to converging lens with an adjustable object.

Eg, http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=1155.new;topicseen#new

To see the real image we need a screen. Yet i notice most simulations do not have an adjustable screen.

[glow=green,2,300]I would like to request a simulation of a converging lens ray diagram with an adjustable screen and object at different distance.[/glow]

This suggestion has been posted on the thread (link above) but i would like to officially request for physics simulations on this board.

Lookang previously replied, "I agree with your suggestion. Let me do some research on ways to show the sharpness of the image on the screen."

This thread will assist me in keeping track of any updates in future. Pardon me if there are already applets out there. Pls direct me to it. Thx