A thin prism having refracting angle 10-o is made of glass of refractive index 1-42- This prism is combined with another thin prism of glass of refractive index 1-7- This combination produces dispersion without deviation- The refracting angle of second prism should be - 10-o4-o6-o8-o

Question

Toppr Admin · Accepted Answer

Prism- r1-10- n1-1-42-n2-1-7For Dispersion without deviation-A2-H2-x2212-1-A1-H1-x2212-1-r2-0-7-10-0-42-r2-60

A thin prism having refracting angle 10o is made of glass of refractive index 1.42. This prism is combined with another thin prism of glass of refractive index 1.7. This combination produces dispersion without deviation. The refracting angle of second prism should be : 10o4o6o8o

Prism, r1=10, n1=1.42,n2=1.7For Dispersion without deviation,A2(H2−1)=A1(H1−1)r2(0.7)=10(0.42)r2=60

Prism, $r_{1} = 10$ , $n_{1} = 1.42, n_{2} = 1.7$

For Dispersion without deviation,

$A_{2} (H_{2} - 1) = A_{1} (H_{1} - 1)$

$r_{2} (0.7) = 10 (0.42)$

$r_{2} = 6^{0}$