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Ray optics is valid when characteristic ...

Ray optics is valid when characteristic dimensions are

A

Of the same order as the wavelength of light

B

Much smaller than the wavelength of light

C

Of the order of one millimetre

D

Much larger then the wavelength of light

Text Solution

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The correct Answer is:
D
Ray optics is valid when size of the objects is much larger than the order of wavelength of light .
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A2Z-GEOMETRICAL OPTICS-AIPMT/NEET Questions
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  3. Four lenses of focal length +15 cm , +20 cm, +150 cm and +250cm are av...

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  4. Total flux produced by a source of 1 cd is

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  5. Light wave enters from medium 1 to medium 2. Its velocity in 2^(nd) m...

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  6. An object is at a distance of 0.5m in front of a plane mirrorr. Distan...

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  7. If the speed of light in vacuum is C m//sec, then the velocity of ligh...

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  8. A person uses a lens of power +3D to normalise vision. Near point of h...

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  9. A small air bubble in a sphere of glass with radius 4 cm appears to be...

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

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  11. An equiconvex lens is cut into two halves along (i) XOX^(') and (ii) Y...

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  12. The sun makes 0.5^(@) angle on earth surface. Its image is made by con...

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  13. The chromatic aberration in lenses is due to

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  14. A glass prism has refractive index sqrt(2) and refracting angle 30^(@...

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  15. A beam of light composed of red and green ray is incident obliquely at...

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  16. A telescope has an objective lens of 10cm diameter and is situated at ...

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  17. A short linear object of length b lies along the axis of a concave mir...

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  18. A person who can see things most clearly at a distance of 10 cm. Requi...

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  19. A transparent cube of 15 cm edge contains a small air bubble. Its appa...

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  20. The refractive indices of the material of the prism and liquid are 1.5...

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