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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 materials is (in `m//s`)

A

`3 xx 10^(8) m//s`

B

`sqrt(3) xx 10^(8) m//s`

C

`3/(sqrt2) xx 10^(8) m//s`

D

`1/3 xx 10^8 m//s`

Text Solution

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The correct Answer is:
B
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Knowledge Check

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

    A
    `3 xx 10^(8)`
    B
    `((3)/(sqrt(2))) xx 10^(8)`
    C
    `sqrt(3) xx 10^(8)`
    D
    `0.5 xx 10^(8)`

  • The angle of incidence at which reflected light is totally polarised for reflection from air to glass (refractive index n) is

    A
    `sin^(-1)(n)`
    B
    `sin^(-1)((1)/(n))`
    C
    `tan^(-1)((1)/(n))`
    D
    `tan^(-1)(n)`

  • A beam of light strikes a glass plate at an angle of incident 60^(@) and reflected light is completely polarised than the refractive index of the plate is-

    A
    `1.5`
    B
    `sqrt(3)`
    C
    `sqrt(2)`
    D
    `(3)/(2)`

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