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When a light ray in air is incident on g...

When a light ray in air is incident on glass at `57^(@)`, the reflected ray is completely polarised. If the same ray is incident on water at an angle `theta`, also the reflected ray is completely polarised. Then

A

`theta gt 57^(@)`

B

`theta lt 57^(@)`

C

`theta = 57^(@)`

D

`theta = 90^(@)`

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The correct Answer is:
B
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CHHAYA PUBLICATION-DIFFRACTION AND POLARISATION OF LIGHT-EXERCISE (MULTIPLE CHOICE QUESTIONS)
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  5. An unpolarised light of intensity I(0) falls on a pair of Nicol prism....

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  6. A polaroid is inclined at an angle 45^(@) with the incident light of i...

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  7. Amplitude of unpolarised light on a polariser is a. Amplitude of polar...

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  8. When a light ray in air is incident on glass at 57^(@), the reflected ...

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  9. The Brewster's law in polarisation of light is

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  10. From Brewster's law it follows that the polarising angle depends on

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  11. The tangent of the polarising angle is equal to the refractve indices ...

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  12. A ray of light is incident on a glass. The reflected ray gets totally ...

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  13. Angle of polarisation for a medium is 60^(@). Critical angle for this ...

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  14. An unpolarised ray of light is incident on water surface. The incident...

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  15. Critical angle of a medium is sin^(-1)(0.6). The polarising angle for...

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  16. Brewster's angle at glass-air interface is 54.74^(@). If a ray of ligh...

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  17. If mu(O) and mu(E ) be the refractive indices of the crystal for O-ray...

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  18. In double refraction we get two refracted rays, i.e., O-ray and E-ray....

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  19. When a polaroid, placed in the path of light is rotated , the intensit...

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  20. When a polariod, placed in the path of light, is rotated, there is no ...

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