If the ratio of dispersive powers of the materials of two prism is 2:3 and ratio of angular dispersions produced by them is 1:2 then the ratio of mean deviation produced by them is 1) 4:3 2) 3:4 3) 1:3 4) 3:1
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If the ratio of dispersive powers of the materials of two prisms be 2: 3 and ratio of angular dispersions produced by them is 1 : 2, then the ratio of mean deviation produced by them is:
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