physics

[hassam]

in light experiments using objects, lenses and a screen
try to use a translucent screen
but why ????? :?:

 

[shamil]

what is the lens?
Concave or convex?

 

[shamil]

I beleive that it is to minimize the scattering of light rays to form a clearer image and also beause it will be easier to view the mage grom the back of the screen as well

 

[shamil]

Yes, I'm quite sure that the answer is because it is easier to view from the back of the screen as there is no obstruction of light rays.

 

[hassam]

thNxxx

 

[miracle]

nov 2003 que 4 b1 atp physics O level.....i need help in the part where V/V0 is riten ....wats the meanin of this part and how can we solve it?

 

[PlanetMaster]

The meaning is written in b(i):
"The volume of water in the tank at the beginning of the experiment is V0."

Divide the V/cm³ written in second coloum by V0 which is 13600 (From graph at t=0).