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Question (1) Idea

See in handouts Page No 300,

Question (2) Idea

See in Handouts Page No 214,215

Question (3) Idea

See in handouts Page No 234

Question No 2


Question No 3

Kia ye thek hain?


Thanks Touseef

Handouts mai multiplication kuch is tarah hy.agr normal mutiplication karen to ye answer bnta hy (0,1,0).isn't it?ye q2 nai hy but related to q2 hy. can you explain this multiplication?

normal = (p1-p2) x (p3-p2)
= (0,-1,0) x (1,-1,0)
= <(-1)*0 - 0*(-1), 0*1 - 0*0, 0*(-1) - (-1)*1>
= <0,0,1>

I can explain this multiplication Take cross Product  (0,-1,0) x (1,-1,0)

Can anyone please confirm me the ans of question 1?


2nd and 3rd ka ans



2,0,0 hain ???

Your answer is incorrect 

The refracted ray's angle is less than the incoming ray's

Angle 2 > Angle 1 

Your Answer should be less than be angle 65

thn what is correct ans of Q 1 

JAZAK ALLAH Usman Mughal


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