Question

the deviation produced for violet, yellow and red lights are 3.75, 3.25 and 2.86 degrees. calculate despersive power​

Answer 1

Hey mate,

● Answer -
ω = 0.0135

● Explanation -
Refractive index for violet color -
μv = (A + δv) / A
μv = (60 + 3.75) / 60
μv = 1.062

Refractive index for yellow color -
μy = (A + δy) / A
μy = (60 + 3.25) / 60
μy = 1.054

Refractive index for red color -
μr = (A + δr) / A
μr = (60 + 2.86) / 60
μr = 1.047

Dispersive power is calculated by -
ω = (μr - μv) / (μr + μv - 1)
ω = (1.062-1.047) / (1.062+1.047-1)
ω = 0.0135

Therefore, dispersive power of material is 0.0135 .


Hope this helped...