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A thin prism of glass is placed in air and water respectively. If `n_(0) = (3)/(2)` and `n_(w) = (4)/(3)`, then the ratio of deviation produced by the prism for a small angle of incidence when placed in air and water separately is:A. `9 : 8`B. `4 :3`C. `3 :4`D. `4 :1` |
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Answer» Correct Answer - D `delta_(a)=((3)/(2)-1)xx A=(A)/(2)` `delta_(w)=((3//2)/(4//3)-1)A=(A)/(8)` `(delta_(air))/(delta_(water))=(4)/(1)`. |
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