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The refractive index of glass is 1.520 f...

The refractive index of glass is 1.520 for red light and 1.525 for blue light. Let 'delta_r' and 'delta_b' be the angle of minimum deviation for red and blue light respectively in a prism of thin glass, then

A

`delta = delta_b`

B

`delta_r gt delta_b`

C

`delta_r lt delta_b`

D

both (A) and (B).

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TARGET PUBLICATION-OPTICS-EXERCISE
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  3. The refractive index of glass is 1.520 for red light and 1.525 for blu...

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  4. The angular dispersion produced by a prism of angle 5^@ is [nV = 1.665...

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  5. The refractive indices for the light of violet and red colours of any ...

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  6. A spectrum is formed by a prism of dispersive power omega. If the angl...

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  7. Dispersive power depend upon

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  8. The dispersive power (omega) of the material of prism is given by

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  9. The refractive index of the prism for violet colour is 1.7 and that fo...

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  10. Mirage' is a phenomenon due to

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  11. The rainbow is formed due to

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  12. The complete circle of rainbow can be seen when

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  13. To observe any rainbow the altitude of sun or the angle made by the su...

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  14. The primary rainbow is due to internal reflection inside droplet and ...

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  15. Angular width of primary rainbow is

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  16. The average angle of inclination of the primary rainbow with the axis ...

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  17. In case of secondary rainbow, colour is at the top.

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  18. The secondary rainbow is due to internal reflection inside droplet.

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  19. The straight line joining the sun and the observer along which centre ...

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  20. Pick the correct statement from the following.

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