Calculate dispersive power of glass, accurately up to decimal places, from the following data:
Refractive index of glass for red colour = 1.60
Refractive index of glass for yellow colour =1.61
Refractive index of glass for violet colour = 1.62
Refractive index of red, μred = 1.60,
Refractive index of yellow, μyellow = 1.61
Refractive index of violet, μviolet = 1.62
Dispersive power of glass (μ) = μ v - μ R / μ Y -1
= 1.62- 1.60/ 1.61-1
= .02/.61
= 0.033