Physics p4

[Jazib]

m/j 09 Q 11 b iii.

 

[Dara]

i too hv prob in this question!! :?

 

[Jazib]

hope sum1 answers it b4 exam then

 

[princesszahra]

ya i want to answer to u ppl
sorry dara couldnt pm u
really sorry

ok ur doubt
the value u get in i is suppose alpha
and that in ii is beta
so in part iii
alpha = reflect divided ny incident
u gotta find intensity of reflected
let it be R
so R /0.39I=0.33 ( here I is original intensity!)) it is I J K ( that I)
R=0.129I
as it passes twice
R=0.129I x 0.39 = 0.05I

 

[Dara]

Hmm..much better now...thank you!

n princess i did pm u again..check it...ill b waiting for your response.

 

[Jazib]

ok thnx fo dat, its cleard.