Which of the following sources gives bes...

Which of the following sources gives best mionochromatic light?

A

A candle

B

A bulb

C

A mercury tube

D

A laser

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The correct Answer is:

D

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HC VERMA-LIGHT WAVES-Objective 1

Light is
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The speed of ight deends
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The equation of a light wave i written as y=Asin(kx-omegat). Here y r...
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Which of the following properties show that light is a transverse wave...
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When light is refracted into a denser medium
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When light is refracted which of the following does not change?
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The amplitude modulated (AM) radio wave bends apreciably round the co...
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Which of the following sources gives best mionochromatic light?
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The wavefronts of a light wave travellilng in vacuum are given by x+y+...
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The wavefronts of light coming from a distant source of unknown shape...
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The inverse square law of intensity (i.e., the intensity prop1/r^2) is...
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Two sources are called coherent if they produce waves
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When a drop of oil is spread on a water surface, it displays beautifu...
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Two coherent sources of different intensities send waves which interfe...
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The slits in a Young's double slit experiemnt have equal width and the...
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A thin transparent sheet is placed in from of a Young's double slit. T...
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If young's douel slit experiment is performed in water
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