When upper half of the lens is covered by an opaque screen 1

Last updated: 6/11/2023

When upper half of the lens is covered by an opaque screen 1 Half the image will disappear 2 Complete image will be formed of same intensity 3 Half image will be formed of same intensity 4 Complete image will be formed of decreased intensity 1 2 f ff 3 4 f treate and en fee