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Two plane mirrors are arranged at right ...

Two plane mirrors are arranged at right angles to each other as shown in figure.A ray of light is incident on the horizontal mirror at an angle `theta`. For what value of `theta`the ray emerges parallel to the incoming ray after reflection from the vertical mirror ?

A

`60^@`

B

`30^@`

C

`45^@`

D

all of these

Text Solution

Verified by Experts

The correct Answer is:
D
The incident and reflected ray make the same angle ‘ Q ’ with the vertical. Therefore they are parallel for any value of `theta`
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NARAYNA-RAY OPTICS AND OPTICAL INSTRAUMENTS -EXERCISE-2 (C.W)(REFLECTION)
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  3. Two mirror labelled L(1) for left mirror and L(2) for right mirror (L(...

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  4. A ray of light is incident at 50^(@) on the middle of one of the two m...

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  5. Two plane mirrors A and B are aligned parallel to each other, as shown...

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  7. A short linear object of length b lies along the axis of a concave mir...

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  8. A rod of length 10 cm lies along the principal axis of a concave mirro...

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  14. In the figureshownm the image of a real object is formed at point I. A...

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  15. A ray of light is incident on a plane mirror along a vector hat i+hat ...

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  16. A plot of modulus of image distance versus object distance for a spher...

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  17. A small plane mirror kept at the centre of a sphere of diameter 3 m, m...

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