OpenStudy (anonymous):

@physics HI,please help. Problem: converging thin lense. In its focal point F(F=0.1m) is light source(point) and there is screen perpendicular to optical axis (1m far from lense).What is the lighting(E) on the screen without and with lense.

5 years ago
OpenStudy (amistre64):

they @physics doesnt work anymore

5 years ago
OpenStudy (amistre64):

@screename pings a person to your post; but other than that youd have to actually post it ti physics for them to see it :)

5 years ago
OpenStudy (anonymous):

ok

5 years ago
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