UNIT 1 Quantum Mechanics Question Bank PDF

MEDI-CAPS UNIVERSITY, INDORE DEPARTMENT OF PHYSICS UNIT 1 QUANTUM MECHANICS MCQS AND SAMPLE QUESTIONS S.NO. Question...

MEDI-CAPS UNIVERSITY, INDORE DEPARTMENT OF PHYSICS UNIT 1 QUANTUM MECHANICS MCQS AND SAMPLE QUESTIONS S.NO. Question Option-1 Option-2 Option-3 Option-4 Correct Answer The de-broglie hypothesis is associated wave nature of wave nature of alpha wave nature of wave nature of all 1 with : electron only particle only radiations material particles Option-4 If the momentum of a particle is 2 increased to four times , then the debroglie wavelength will become two times four times half times one-fourth times Option-4 According to wave mechanics, a 3 material particle is associated with a single wave a wave packet progressive wave light wave Option-2 The wavelength of matter wave is 4 independent of: mass velocity charge momentum Option-3 Assuming the velocity to be 5 same,which particle is having longest wavelength an electron a proton a neutron an alpha particle Option-1 Dual nature of matter was predicted 6 by: Schrodinger Louis de-Broglie G.P. Thomson Heisenberg Option-2 7 Uncertainity principle states that the due to small size of due to large size of due to error in error in measurement is due to : dual nature of particles particles particles measuring instrument Option-1 Compton shift is maximum when angle 8 of scattering of photon is: 180ᵒ 0 90ᵒ 45ᵒ Option-1 9 Compton shift depends upon: incident wavelength angle of scattering target material energy of incident light Option-2 10 According to Plank's hypothesis ,the discrete in integer emission or absorption of energy is continous multiple of hv only hv zero Option-2 The wave function associated with a finite,continous and 11 material particle is : only finite only continous only single valued single valued. Option-4 establishes that establishes that position of a particle momentum of a is not observable for 12 According to Heisenberg Uncertainity can be known with particle can be exactly the macroscopic opposes the de-broglie Principle : certainity measured objects hypothesis Option-3 Which of the following can act as both 13 a particle and as a wave? photon electron neutron all of these Option-4 The total probability of finding the 14 particle in space must be zero unity infinity double Option-2  MEDI-CAPS UNIVERSITY, INDORE DEPARTMENT OF PHYSICS The square of the magnitude of the 15 wave function is called current density probability density zero density volume density Option-2 the energy levels are the energy levels are 16 According to Quantum Mechanics ,for discrete and the energy is always the energy levels are discrete but not the particle moving in a box: equispaced zero continous equispaced Option-4 The wave function of particle lies in 17 which region? x>0 x