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CBSE Class 12-science Answered

7th sum plz
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Asked by lovemaan5500 | 06 Dec, 2019, 09:11: PM
answered-by-expert Expert Answer
Refractive index n = sin i / sin r  ....................(1)
where i is angle of incidence , r is angle of refraction
 
At minimum deviation, r = A/2 ...................(2)
 
where A is refracting angle of prism
 
Hence from eqn.(1) and (2), we have,   sin50 / sin(A/2) = 1.5   or  sin(A/2) = (2/3)sin50 = 0.51
 
Hence  refracting angle of prism, A = 2 × sin-1 (0.51) ≈ 61°
Answered by Thiyagarajan K | 07 Dec, 2019, 12:07: PM

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CBSE 12-science - Physics
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