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A ray of light is incident on a horizont...

A ray of light is incident on a horizontal plane mirror at an angle of incidence `30^@`. By what angle should the mirror be rotated so that the reflected ray becomes horizontal?

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`30^@`
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AAKASH SERIES-RAY OPTICS-PROBLEMS ( LEVEL-I)
  1. If two plane mirrors are inclined at an angle of 120^@ to each other,...

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  2. Two plane mirrors are placed parallel to each other and 40 cm apart. A...

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  3. A ray of light is incident on a horizontal plane mirror at an angle of...

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  4. Find the position and nature of the image of an object of height 3 cm ...

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  5. Find the position and nature of the image of an object of height 3 cm ...

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  6. An object is placed at a distance of 30 cm from a concave mirror and i...

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  7. An object 2 cm high is placed at right angles to the principal axis of...

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  8. The sun subtends an angle half a degree at the pole of a concave mirro...

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  9. An object 2 cm high is placed at right angles to the principal axis of...

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  10. A person looks at himself in a silvered ball of diameter 64 cm from a ...

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  11. A convex mirror of radius of curvature 4 m is used as rear -view mirro...

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  12. If the refractive index of diamond is 2.4 find the velocity of light i...

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  13. The wavelength of blue light in air is 4500 Å . What is its frequency?...

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  14. A beam of light is incident on a glass slab of refractive index 1.5 at...

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  15. Find the time taken by light to travel a distance of 3 cm in glass. (c...

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  16. A glass slab of thickness 4 cm contains the same number of waves as 5 ...

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  17. The refractive index of denser medium with respect to rarer medium is ...

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  18. A source of yellow light placed in air is observed by a person swimmin...

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  19. In the arrangement shown in the figure a light ray is incident at an a...

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  20. One side of a glass slab is silvered as shown in the figure. A ray of ...

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