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A light ray inclined at an angle 30^(@) ...

A light ray inclined at an angle `30^(@)` with the horizontal falls on a plane mirror and after reflection light ray becomes vertical. At what angle the plane mirror is inclined with the horizontal?

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To solve the problem, we need to determine the angle at which the plane mirror is inclined with the horizontal when a light ray strikes it at an angle of 30 degrees and reflects vertically. Here’s a step-by-step solution: ### Step 1: Understand the Setup We have a light ray inclined at an angle of 30 degrees with the horizontal. This means that the angle of incidence (the angle between the incoming ray and the normal to the mirror) needs to be determined based on the inclination of the mirror. ### Step 2: Define the Angle of Inclination Let the angle of inclination of the mirror with the horizontal be denoted as θ. The normal to the mirror will then be at an angle of (90° - θ) with the horizontal. ...
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On a plane mirror, a ray of light is incident at an angle of 30^@ with horizontal . To make the reflected ray vertical , at what angle with horizontal must a plane mirror be placed ?

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Knowledge Check

  • A ray of light is incident at an angle of 30^(@) with the plane of a plane mirror. Find the angle of reflection.

    A
    `0^@`
    B
    `90^@`
    C
    `30^@`
    D
    `60^@`

  • A light ray is incident normally on a plane mirror. The angle of reflection will be

    A
    `120^@`
    B
    `90^@`
    C
    `45^@`
    D
    `0^@`

  • On a plane mirror, a ray of light is incident at an angle of 30° with horizontal. To make the reflected ray vertical, at what angle with the horizontal must a plane mirror be placed?

    A
    `30^(@)`
    B
    `60^(@)`
    C
    `45^(@)`
    D
    `54^(@)`

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