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Two plane mirrors A and B are aligned pa...

Two plane mirrors A and B are aligned parallel to each other, as shown in the figure. A light ray is incident at an angle of `30^@` at a point just nside one end of A. The plane of incidence coincides with the plane of the figure. The maximum number of times the ray undergoes reflections (including the first one) before it emerges out is)

A

28

B

30

C

32

D

34

Text Solution

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The correct Answer is:
B
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Two plane mirror M_1 and M_2 are placed perpendicular with each other, as shown in figure. The ray AB makes an angle 39^@ with plane mirror M_1 ,then 3.What is the angle of incident corresponding to the ray BC?

Two plane mirror M_1 and M_2 are placed perpendicular with each other, as shown in figure. The ray AB makes an angle 39^@ with plane mirror M_1 ,then 4.What is the angle of reflection corresponding to the ray CD

Knowledge Check

  • Unpolarized light is incident on a plane sheet of water surface. The angle of incidence for which the reflected and refracted rays are perpendicular to each other is ( mu of water =4/3 )

    A
    a. `sin^(-1)(4/3)`
    B
    b. `tan^(-1)(3/4)`
    C
    c. `tan^(-1)(4/3)`
    D
    d. `sin^(-1)(1/3)`

  • What should be the angle between two plane mirror so that whatever be the angle of incidence, the incident ray and the reflected ray from the two mirrors be parallel to each other

    A
    `60^@`
    B
    `90^@`
    C
    `120^@`
    D
    `175^@`

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