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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-GEOMATRICAL OPTICS -Exercise-3
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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 thin 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 a 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 measures the focal length of a convex lens by putting an obj...

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

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  14. In an optics experiment, with the position of the object fixed, a stud...

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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. Let the x-z plane be the boundary between two transparent media. Mediu...

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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 12 cm...

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

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