The number of wavelengths in the visible spec | vedclass

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(D) The visible light spectrum is the portion of the electromagnetic spectrum that is visible to the human eye.It ranges in wavelength from approximat

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Infinite

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(D) The visible light spectrum is the portion of the electromagnetic spectrum that is visible to the human eye.It ranges in wavelength from approximately $400 \, nm$ ($4 	imes 10^{-7} \, m$,violet) to $700 \, nm$ ($7 	imes 10^{-7} \, m$,red).Since wavelength is a continuous variable,there are an infinite number of possible wavelengths between any two values in this range.

List-$I$	List-$II$
$(a)$ $10\, km$ height over earth's surface	$(i)$ Thermosphere
$(b)$ $70\, km$ height over earth's surface	$(ii)$ Mesosphere
$(c)$ $180\, km$ height over earth's surface	$(iii)$ Stratosphere
$(d)$ $270\, km$ height over earth's surface	$(iv)$ Troposphere

The number of wavelengths in the visible spectrum is:

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