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Digital movie projectors work on the pri...

Digital movie projectors work on the principle of

A

Reflection from micromirrors

B

Refraction from thin lenses

C

Dispersion from thin prisms

D

Total internal reflection from optical fibres

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Knowledge Check

  • Prism works on the principle of :

    A
    Reflection
    B
    Refraction
    C
    Dispersion
    D
    Diffraction

  • A rocket works on the principle of

    A
    conservation of mass
    B
    conservation of energy
    C
    conservation of liner momentum
    D
    none of these

  • Smoke precipitator works on the principle of

    A
    centrifugation.
    B
    neutralization of charge on colloids,
    C
    absorption,
    D
    addition of electrolytes.
    • AAKASH INSTITUTE-RAY OPTICS AND OPTICAL INSTRUMENTS-ASSIGNMENT (SECTION - A)
    1. Digital movie projectors work on the principle of

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    2. Day and night settings for rearview mirrors uses

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    3. When a beam of light is incident on a plane mirror, it is found that a...

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    4. Number of images of an object kept symmetrically between two mirrors i...

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    5. A person 1.6 m tall is standing at the center between two walls three ...

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    6. While capturing solar energy for commercial purposes we use

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    7. A convex mirror is used to form an image of a real object. The image ...

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    8. A concave mirror of focal length f produces a real image n times the s...

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    9. A convex mirror has a focal length f. A real object is placed at a dis...

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    10. An object placed in front of a concave mirror of focal length 0.15 m p...

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    11. When a light ray from a rarer medium is refracted into a denser medium...

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    12. A beam of light is converging towards a point. A plane parallel plate ...

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    13. The length of a vertical pole at the surface of a lake of water (mu=4/...

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    14. A ray of light strikes a glass plate at an angle 60^@ . If the reflect...

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    15. A microscope is focussed on a coin lying at the bottom of a beaker. Th...

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    16. Two transparent media A and B are separated by a plane boundary. The s...

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    17. Which of the following phenomenon light forms a rainbow?

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    18. Which of the following is used in optical fibres?

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    19. An object is placed at a distance of f//2 from a convex lens. The imag...

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    20. The least distance between a point object and its real image formed by...

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