JEE Mains · Physics · STD 12 - Ray optics and optical instruments
- JEE Mains 2022
- Medium
- Numerical
A thin prism of angle \(6^{\circ}\) and refractive index for yellow light \(\left(n_{Y}\right) 1.5\) is combined with another prism of angle \(5^{\circ}\) and \(n _{ Y }=1.55\). The combination produces no dispersion. The net average deviation ( \(\delta\) ) produced by the combination is \(\left(\frac{1}{x}\right)^{\circ}\). The value of \(x\) is.......

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Answer & Solution
Correct Answer
(B) \(4\)
Step-by-step Solution
Detailed explanation
\(\delta= A \left(\mu_{ y }-1\right)- A ^{\prime}\left(\mu_{ y }^{\prime}-1\right)\)
\(=6(1.5-1)-5(1.55-1)\)
\(=\frac{1}{4}\)
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