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For water mu=4//3 and the velocity of li...

For water `mu=4//3` and the velocity of light in vaccum is `3 times 10^8 ms^-1` the time taken for light to travel a distance of 450m in water will be (nearly)

A

`1.5 mu s`

B

`1 mu s`

C

`2 mu s`

D

`3 mu s`

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The correct Answer is:
C
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AAKASH SERIES-RAY OPTICS -EXERCISE II
  1. A ray of light passes normally through a slab of thickness t. IF the s...

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  2. A monochromatic light passes through a glass slab of thickness 9cm in ...

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  3. For water mu=4//3 and the velocity of light in vaccum is 3 times 10^8 ...

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  4. A glass slab of thickness 4cm contains the same number of waves as 5cm...

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  5. A glass slab of thickness 8cm contains the same number of waves as 10c...

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  6. The wavelength of ligth is vaccum is 5000A^@ when it travels normally ...

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  7. The optical path of a monochromatic light is the same if it goes throu...

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  8. The refractive index of denser medium with respect to rarer medium is ...

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  9. A ray of ligth is incident on a glass slab making an angle of 60^@ wit...

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  10. A ray of light incidents on a refracting surface at 30^@ with the surf...

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  11. IF hat j denotes a unit vector along an incident ray. hat r a unit vec...

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  12. Calculate the refractive index of glass with respect to air if its cri...

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  13. The velocities of light in two different media are 2 times 10^8 m//s a...

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  14. The critical angle for refraction from glass to air is 30^@ and that f...

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  15. Light takes time t1 to travel a distance x1 in vaccum and the same lig...

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  16. Wavelength length of light in denser medium is 4000A^@ it is grazing i...

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  17. If the angle of incidence is twice the angle of refraction in a medium...

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  18. A ray of light from a denser medium strikes a rarer medium. The reflec...

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  19. The refractive index of the core of an optical fibre is mu2 and that o...

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  20. A light ray travels from a denser medium to a rarer medium. IF the cri...

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