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A ray of light travelling in the directi...

A ray of light travelling in the direction `(1)/(2)``(hati,+sqrt3hatj)` is incident on a plane mirror. After reflection, it travels along the direction `(1)/(2)(hati-sqrt3hatj)` . The angle of incidence is

A

`30^(@)`

B

`45^(@)`

C

`60^(@)`

D

`75^(@)`

Text Solution

Verified by Experts

The correct Answer is:
A, C
Angle between given rays is `120^(@)`
so angle of incidence is `30^(@)`
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RESONANCE ENGLISH-GEOMATRICAL OPTICS -Exercise-3
  1. Most material have the refractive index, n gt 1. So, when a light ray ...

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  2. The image of an object, formed by a plano-convex lens at a distance of...

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  3. A ray of light travelling in the direction (1)/(2)(hati,+sqrt3hatj) is...

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  4. A transparent with film of uniform thickness and refractive index n(1)...

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  5. A point source S is placed at the bottom of a transparent block of hei...

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  6. Consider a concave mirror and convex lens (refractive index = 1.5 ) of...

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  7. Two identical glass rods S(1) and S(2) (refractive index=1.5) have one...

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  8. A monochromatic beam of light is incided at 60^(@) in one face of an e...

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  9. Light guidance in an optical fibre can be understood by considering a ...

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  10. Light guidance in an optical fibre can be understood by considering a ...

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  11. The refractive index of a glass is 1.520 for red light and 1.525 for b...

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  12. A student measuring the focal length of convex lens by putting an obje...

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  13. A transparent solid cylindrical rod has a refractive index of (2)/(sqr...

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  14. In a optics experiment, with the positive of the object fixed, a stude...

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  15. A car is fitted with a convex side-view mirror of focal length 20 cm. ...

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  16. The XY plane is the boundary between two tranparednt media. Medium 1 w...

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  17. A beaker contains water up to a height h1 and K oil above water up to...

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  18. When monochromatic red light is used instead of blue light in a convex...

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  19. An object 2.4 m in front of a lens forms a sharp image on a film 12cm ...

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  20. Diameter of plano-convex lens is 6 cm and thickness at the centre is 3...

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