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ir the refractive indices of crown glass...

ir the refractive indices of crown glass for red yellow and violet colours are 1.5140, 1.570 and 1.5318 respectivelyand ofr flint glass these values are 1.6434, 1.6852 respectively , then the dispersive powers for crown and flint glass are respectively

A

0.034 and 0.064

B

0.064 and 0.034

C

1.00 and 0.064

D

0.034 and 1.0

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A
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