CBSE Class 12-science Answered
Plz answer 10th numerical
Asked by lovemaan5500 | 07 Dec, 2019, 08:54: PM
Expert Answer
We have , n = sin [ (A+Dm)/2 ] / Sin(A/2)
where n is refractive index of glass, A is angle of prism and Dm is angle of minimum deviation
hence, n = sin(50) / sin(30) = 2*0.766 = 1.532
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If the prism is placed in water, refractive index will become, n = 1.532/1.33 = 1.152
We have, sin[ (60+Dm )/2 ] / sin (30) = 1.152
Sin[ (60+Dm)/2 ] = 0.576
From above eqn., we get new angle of minimum deviation = 10.3 °
Answered by Thiyagarajan K | 07 Dec, 2019, 09:32: PM
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