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NEET UG CHEMISTRY MCQ: STRUCTURE OF ATOM
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Which of the following phenomena are not justified by wave nature of light?
(a) Line spectra of atoms with special reference to hydrogen
(b) Variation of heat capacity of solids as a function of temperature
(c) Photoelectric effect
(d) Black body radiation
(a) Line spectra of atoms with special reference to hydrogen
(b) Variation of heat capacity of solids as a function of temperature
(c) Photoelectric effect
(d) Black body radiation
View answer and explanation
Correct option: D
(a), (b), (c) and (d)
Option D ((a), (b), (c) and (d)) is correct because all listed phenomena require the particle nature of light (or matter) for their explanation.
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Reason: The oscillating electric and magnetic fields produced by oscillating charged particles are parallel to each other and both are perpendicular to the direction of propagation of the wave. S-I: The orbital has maximum electron density along the y axis and its nodal plane is xz plane.
S-II : For a given atom, for all values of , the -orbitals have the same shape, but the overall size decreases as '' increases. S-I: Elements like and were discovered when their minerals were analysed by spectroscopic methods.
S-II: The element helium was discovered in the sun by spectroscopic method. In which one of the following, the number of protons is greater than number of neutrons but number of protons is less than the number of electrons?