A thin prism of angle `15^@` made of glass of refractive index `mu_1=1.5` is combined with another prism of glass of refractive index `mu_2=1.75`. The combination of the prisms produces dispersion without deviation. The angle of the second prism should be

A thin prism of angle 15^@ made of glass of refractive index = 1.5 is combined with another prism of glass of refractive index = 1.75 .The combination of prism produces dispersion without deviation.The angle of the second prism should be

A thin prism having refracting angle 10^@ 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 refacting angle of second prism should be :

A thin prism having refracting angle 10^(@) is made of glass of refracting 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 :

A thin prism having refracting angle 10^(@) is made of glass of refracting 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 :

A thin prism having refracting angle 10^(@) is made of glass of refracting 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 :

A thin prism having refreacting angle 10^(@) is made of galss refractive index 1.42. This prism is combined with another thin prism glass of refractive index 1.7 This Combination profuces dispersion without deviation. The refreacting angle of second prishm should be

A thin prism having refreacting angle 10^(@) is made of galss refractive index 1.42. This prism is combined with another thin prism glass of refractive index 1.7 This Combination profuces dispersion without deviation. The refreacting angle of second prishm should be

A thin prism of angle 6^(@) made up of glass of refractive index 1.5 is combined with anorher prism made up of glass of refractive index 1.75 to produce dispersion without deviation. The angle of second prism is