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The dispersive powers of crown and flint...

The dispersive powers of crown and flint glasses are 0.03 and 0.05, respectively. If the difference between the refractive indices for red and blue is 0.014 crown glass and 0.023 for flint glass, calculate the angle of a flint glass prism which would produce a net deviation of `5^(@)` with a crown glass prism of `3^(@)`.
[ Hint: Net deviation =`(mu -1) A+(mu'-1)A'`]

Text Solution

Verified by Experts

The correct Answer is:
`7^(@)49'`
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Knowledge Check

  • The dispersive powers of flint glass and crown glass are 0.053 and 0.034 respectively and their mean refractive indices are 1.68 and 1.53 for white light .Calculate the angle of the flint glass prism required to form an achromatic combination with a crown glass prism of refracting anlge 4^@ .

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    C
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