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Find the dispersive power of flint glass...

Find the dispersive power of flint glass. The refractive indices of flint glass for red, yellow and violet light are 1.613, 1.620 and 1.632 respectively.

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Dispersive power is given by,
`omega=(mu_(v)-mu_(r))/(mu_(y)-1)=(1.632-1.613)/(1.620-1)=0.031`
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