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Ray optics is valid, when characteristic...

Ray optics is valid, when characteristic dimensions are

A

Mush smaller than the wavelength of light

B

Of the same order as the wavelength of light

C

Of the order of one millimeter

D

Much larger than the wavelength of light

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The correct Answer is:
D
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AAKASH INSTITUTE-RAY OPTICS AND OPTICAL INSTRUMENTS-ASSIGNMENT (SECTION - C)
  1. The focal lengths of a converging lens measured for violet, green and ...

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  2. A luminous object is placed at a distance of 30 cm from the convex len...

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  3. A plano-convex lens is made of refractive index 1.6. The radius of cur...

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  4. For a plane convex lens (mu= 1.5) has radius of curvature 10 cm. It i...

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  5. A bubble in glass slab (mu = 1.5) when viewed from one side appears at...

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  6. A body is located on a wall. Its image of equal size is to be obtained...

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  7. A convex lens is dipped in a liquid whose refractive index is equal to...

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  8. Which of the following is incorrect?

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  9. A double concave thin lens made out of glass (mu=1.5) have radii of cu...

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  10. A convex lens forms a real image 16 mm long on a screen. If the lens i...

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  11. A point object is moving with speed u(0) at a position somewhere betwe...

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  12. The minimum magnifying power of an astronomial telescope is M. If the ...

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  13. An object is placed in front of two convex lenses one by one at a dist...

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  14. If R(1)andR(2) are the radii of curvature of the spherical surfaces of...

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  15. The focal length of a thin lens in vacuum is f. If the material of the...

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  16. To increase the magnifying power of telescope ( f(o) = focal length ...

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  17. An astronomical telescope of ten-fold angular magnification has a leng...

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