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Consider a sphere of radius R exposed to radition of instensity I as shown in figure . If surface of sphere is partially reflection and reflection coefficient is 0.3, then radiation force experienced is : A. `(pi R^(2)I)/(c)`B. `(1.7pi R^(2)I)/(c)`C. `(0.3pi R^(2)I)/(c)`D. None of these |
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Answer» Correct Answer - 4 `F=dp` `(1)/(c) = n(h)/(lambda)` effective area `= pi R^(2)` `F= 1.3 pi R^(2)(I)/(c)` |
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