Which of the following is (are) TRUE? Circle it (them). (a) Quantum mechanics gi
ID: 2076313 • Letter: W
Question
Which of the following is (are) TRUE? Circle it (them). (a) Quantum mechanics gives a mathematical model of the atom and atomic phenomena. (b) The magnetic properties of a material are determined by the quantum quantities of electron spin angular moments S the orbital angular momentum L_exb. (c) The earth may be considered as giant magnet. (d) Planck's constant is important in calculating the electron's spin angular momentum and orbital angular momentum (e) Electromagnetic waves require a medium to transfer them from one place to another, just like sound waves. (f) Two of the four Maxwell's equations suggest that light is an electromagnetic wave. (g) Electromagnetic waves travel in vacuum at different speeds depending on the Bohr magneton that is generating them.Explanation / Answer
(a) Quantum Mechanics is mathematical explanation(probability) of physical phenomenon.
(B)False, Magnetic properties are explained by magnetic moments, quantum numbers of all (bulk) are supposed to be considered.
(C) True: Earth has magnetic field,so its is a giant magnet.
(d) True: Plancks constant is important in calculations of angular momentum.
(E) False: They can travel in vaccuum too,Sunlight reaches earth through vaccuum.
(F) True: Curl of curl of E and B in Faradays law and Amperes law,on solving come out to be wave equations.
(g) False: it is constant in vaccuum, i.e 3× 10^8m/s.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.