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COMEDK · Physics · 25. Ray Optics

A ray of light suffers minimum deviation in equilateral prism \(P\). Additional prisms \(Q\) and \(R\) of identical shape and of same material as that of \(P\) are now combined as shown in figure. The ray will now suffer


  1. A greater deviation
  2. B no deviation
  3. C same deviation as before
  4. D total internal reflection
Verified Solution

Answer & Solution

Correct Answer

(C) same deviation as before

Step-by-step Solution

Detailed explanation

The complete ray diagram for the given combination of prisms is shown below. Sines, ray of light incident on prism \(p\) suflers minimua deviation, bence it becomes parallel to the base of prism \(\boldsymbol{P}\). As prism \(Q\) and \(R\) are of identical shape and of same…