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(A) The quantum nature of electromagnetic $(EM)$ radiation implies that radiation consists of discrete packets of energy called photons,where the ener

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(A) The quantum nature of electromagnetic $(EM)$ radiation implies that radiation consists of discrete packets of energy called photons,where the energy of each photon is given by $E = h
u$.$1$. The Photoelectric effect involves the emission of electrons when light (photons) hits a material,which can only be explained by the particle (quantum) nature of light.$2$. The Compton effect involves the scattering of $X$-rays by electrons,which demonstrates the particle-like momentum of photons,further supporting the quantum nature of $EM$ radiation.$3$. The Doppler effect and Field effect are phenomena that can be explained by the wave nature of radiation and do not specifically require the quantum (particle) hypothesis.Therefore,both the Photoelectric effect and the Compton effect support the quantum nature of $EM$ radiations.

Column $I$	Column $II$
$(A)$ Transition between two atomic energy levels	$(p)$ Characteristic $X$-rays
$(B)$ Electron emission from a material	$(q)$ Photoelectric effect
$(C)$ Mosley's law	$(r)$ Hydrogen spectrum
$(D)$ Change of photon energy into kinetic energy of electrons	$(s)$ $\beta$-decay

Which of the following support the quantum nature of the $EM$ radiations?
$(A)$ Photoelectric effect
$(B)$ Compton effect
$(C)$ Doppler effect
$(D)$ Field effect

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Which of the following support the quantum nature of the $EM$ radiations?$(A)$ Photoelectric effect$(B)$ Compton effect$(C)$ Doppler effect$(D)$ Field effect