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(A) The energy of a photon is given by $E = \frac{hc}{\lambda}$,where $h$ is Planck's constant,$c$ is the speed of light,and $\lambda$ is the waveleng

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$D, B, A, C$

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(A) The energy of a photon is given by $E = \frac{hc}{\lambda}$,where $h$ is Planck's constant,$c$ is the speed of light,and $\lambda$ is the wavelength.Since $E \propto \frac{1}{\lambda}$,radiations with shorter wavelengths have higher energy.The order of wavelengths for the given radiations is: $\lambda_{	ext{Radiowave}} > \lambda_{	ext{Yellow}} > \lambda_{	ext{Blue}} > \lambda_{	ext{X-ray}}$.Therefore,the order of increasing energy is: $E_{	ext{Radiowave}} This corresponds to the sequence $D, B, A, C$.

List-$I$	List-$II$
$(a)$ Source of microwave frequency	$(i)$ Radioactive decay of nucleus
$(b)$ Source of infrared frequency	$(ii)$ Magnetron
$(c)$ Source of Gamma Rays	$(iii)$ Inner shell electrons
$(d)$ Source of $X$-rays	$(iv)$ Vibration of atoms and molecules
	$(v)$ $LASER$
	$(vi)$ $RC$ circuit

Arrange the following electromagnetic radiations per quantum in the order of increasing energy :-
$A$ : Blue light
$B$ : Yellow light
$C$ : $X$-ray
$D$ : Radiowave

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Arrange the following electromagnetic radiations per quantum in the order of increasing energy :- $A$ : Blue light $B$ : Yellow light $C$ : $X$-ray $D$ : Radiowave