1.

The deviation produced for violet, yellow and red lights for crown glass are 3.75°. 3.25° and 2.86° respectively. Calculate the dispersive power of the crown glass.

Answer»

Given δV = 3.75°, δY = 3.25°, δR = 2.86°

Using the expression for dispersive power

DP = \(\frac{\delta_V-\delta_R}{\delta_Y}\) = \(\frac{3.75-2.86}{3.25}\) = 0.27



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