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Question: Answered & Verified by Expert
In the visible region the dispersive powers and the mean angular deviations for crown and flint glass prisms are $\omega, \omega^{\prime}$ and $d, d^{\prime}$ respectively. The condition of getting dispersion with zero deviation, when the two prisms are combined is
PhysicsRay OpticsTS EAMCETTS EAMCET 2001
Options:
  • A $\sqrt{\omega d}+\sqrt{\omega^{\prime} d^{\prime \prime}}=0$
  • B $\omega^{\prime} d+\operatorname{\omega d}^{\prime \prime}=0$
  • C $\cos +\omega^{\prime} d^{\prime}=0$
  • D $(\omega d)^2+\left(\omega^{\prime} d^y\right)^2=0$
Solution:
2487 Upvotes Verified Answer
The correct answer is: $\cos +\omega^{\prime} d^{\prime}=0$
$\cos +\omega^{\prime} d^{\prime}=0$

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