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At what angle does a ray of light remain...

At what angle does a ray of light remain incilned to the wavefront ?

Text Solution

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The correct Answer is:
`[(pi)/(2)]`
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At what angle should a ray of light be incident on the face of a prism of refractive angle 60^(@) so that it just suffers total internal reflection at the other face? The refractive index of the material of the prism is 1.524 .

At what angle should a ray of light be incident on the face of a prism of refracting angle 60^(@) so that it just suffers total internal reflection at the other face? The refractive index of the material of the prism is 1.524.

Knowledge Check

  • Two plane mirrors are inclined to each other at an angle theta .A ray of light is reflected first at one mirror and then at the other . The total deviation of the ray is

    A
    `2theta`
    B
    `240^@-2theta`
    C
    `360^@-2theta`
    D
    `180^@-2theta`

  • The angle of deviation of a ray of light refracted through a parallel glass slab is

    A
    `45^(@)`
    B
    `0^(@)`
    C
    `90^(@)`
    D
    `60^(@)`

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    How are light rays related with wavefronts ?

    The refracting angle of an equilateral prism is A. Derive an expression for the angle of deviation for a ray of light incident on the refracting surface of the prism. Draw a neat curve to show the variation of deviation with angle of incidence of the incident ray.

    In a plane mirror if a ray of light reflects at 35^@ angle then what will be the value of incident angle?

    The refractive angle of a prism is 1.5. A ray of light is incident at an angle of 40^(@) on a face of the prism. What will be the limiting angle of the prism for emergence of the ray from the other face. [sin 41^(@)19' = 0.6602' sin25^(@)22' = 0.4284]

    What will be the angle of incidence when a ray of light passes through the centre of curvature of a concave mirror?

    What is meant by backward wavefront ?

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