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When the angle of incidence on a materia...

When the angle of incidence on a material is `60^(@)`, the reflected light is completely polarised. The velocity of the refracted ray inside the material is (in `ms^(-1))`

A

`3xx10^(8)`

B

`3/(sqrt(2))xx10^(8)`

C

`sqrt(3)xx10^(8)`

D

`0.5xx10^(8)`

Text Solution

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The correct Answer is:
C
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AAKASH INSTITUTE ENGLISH-WAVE OPTICS-Assignment (Section-A (objective type question(one option is correct)))
  1. In a single slit diffraction pattem

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  2. Diffraction and interference of light refers to -

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  3. A polariser in used to

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  4. Light waves can be polarides as they are

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  5. Through which character, we can distinguish the light waves form sound...

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  6. The angle of polarisation for any medium is 60^(@) , what will be crit...

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  7. Which of the following cannot be polarised?

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  8. An unpolarised light of intensity Io is passed through a polaroid. The...

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  9. Refractive index of material is equal to tangent of polarising angle. ...

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  10. Two nicols are oriented with then principal planes making an anlge of ...

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  11. In the case of linearly polarized light, the magnitude of he electric ...

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  12. When the angle of incidence on a material is 60^(@), the reflected lig...

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  13. For the sustained interference of light, the necessary condition is th...

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  14. Which of the following is conserved when light waves interfere ?

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  15. Huygen wave theory allows us to know:

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  16. If one of the slits in Young's double slit experiment is fully closed,...

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  17. In young's experiment, the separation between 5th maxima and 3rd minim...

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  18. Choose the correct statement

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  19. The distance upto which ray optics holds good is called

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  20. Diffraction effect can be observed in

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