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DPP – Optics

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3 Responses to “DPP – Optics”

1. pooja says:

   March 4, 2011 at 11:32 am

   what is d ans plz let me know if u got the answer with explanation
2. souvik says:

   March 4, 2011 at 1:39 pm

   sin(i)=1/(r.i.)
   R/(R+d)=2/3—-(for all the light to be totally reflected we take the limiting case of the total reflection of the ray grazing through the right side of the left arm)
   R/d=2
3. pooja says:

   March 6, 2011 at 4:50 pm

   hey guys answer is 0.5 is it correct or not