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Two plane mirrors at an angle such that ...

Two plane mirrors at an angle such that a ray incident on a mirror undergoes a total deviation of `240^(@)` after two reflections:

A

the angle between the mirrors is `60^(@)`

B

the number of images formed by this system will be 5, if an object is placed symmetrically between the mirrors

C

the number of images will be 5 if an object is kept unsymmetrical between the mirrors

D

a ray will retrace its path after 2 successive reflections, if the angle of incidence on one mirror is `60^(@)`

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Knowledge Check

  • Two plane mirrror are inclined to each other at 70^(@) . A ray of light is incident on one mirror. They ray after two reflections will undergo a total deviation of :

    A
    `180^(@)`
    B
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    D
    Cannot be found because angle of incidence is not given

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    C
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    D
    `25^(@)`

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