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In vaccum, which colour travels fastest ...

In vaccum, which colour travels fastest ?

A

red

B

violet

C

green

D

none of the above

Text Solution

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The correct Answer is:
D
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PRADEEP-OPTICS-Exercise
  1. Rays of light are falling on a convex lens of focal length 40 cm. As s...

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  2. Which of the following colours has maximum wavelength

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  3. In vaccum, which colour travels fastest ?

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  4. In glass, the velocity of light is minimum for

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  5. The deviation delta of a ray on passing through a prism of small angle...

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  6. What is the relation between angle of prism A, angle of incidence i an...

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  7. When size of scatterer (x) is very much less than the wavelength (lamd...

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  8. A thin prism of 6^@ angle gives a deviation of 3^@. The refractive in...

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  9. An equilateral prism is made of made of material of refractive index s...

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  10. One cannot cannot see through fog, because

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  11. The angle of minimum deviation for prism of angle pi//3 is pi//6. The ...

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  12. A ray of light undergoes………on passing through a prism.

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  13. The deviation delta of a ray on passing through a prism of small angle...

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  14. For prisms with bigger refracting angles, the deviation is calculated ...

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  15. The deviation through a prism is minimum when……….. .

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  16. In the minimum deviation position, the………. In the prism is……… to the b...

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  17. According to Cauchy's formula, the refractive index mu of a material i...

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  18. Wavelength of violet colour is……… wavelength of red colour. Therefore,...

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  19. Angular dispersion of a prism is……….of………..and……….colours.

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  20. Dispersive power of a prism is……….of……….and………. .

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