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Please helpe with this 8th question as i am not getting it

Please helpe with this 8th question as i am not getting it 
 

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Grade:12

1 Answers

Arun
25758 Points
4 years ago
Dear student
 
Opion B is correct.
 
Theta = 2 sin^-1 ( r1 - r2 /r1 + r2)
 
Hope it helps
 
 
Regards
Arun (askIITians forum expert)

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