CBSE Class 12-science Answered
7th sum plz
Asked by lovemaan5500 | 06 Dec, 2019, 09:11: PM
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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