29/03/2020Quantum Physics(Senior Class Physics Study by Topics) 0Comments by Gate Academy Welcome to your Quantum Physics(Senior Class Physics Study by Topics) NAME EMAIL PHONE NUMBER 1. There are ___ types of quantum numbers. 2 5 4 72. Who discovered the photoelectric effect? Micheal Faraday Isaac Newton Heinrich Hertz Hertz3. Quantum physics explains the interaction between? Matter and energy Energy Energy and Nuclear Atomic and Molecules4. The emission of electron from the surface of a metal is called? Compton X-ray Spectra Blackbody Radiation The photoelectric effect5. Quantum mechanics is called the science of what? The colossal The very small The very large The big6. The principle quantum number is related to: The shape of the orbital The average distance of the most electron-dense regions from the nucleus The number of electrons The spatial orientation of the orbital7. When electrons of suitable energy travel through a thin layer of graphite, a pattern of concentric circles is produced on a screen.The production of this pattern is evidence for The existence of X-rays The particle nature of the electron. The nuclear model of the atom. The wave nature of the electron8. The momentum and the position of a particle cannot simultaneously be measured with complete certainty, is based on what assumption? The uncertainty principle Relativity Theory Particle duality Plank's theory9. Heisenberg’s Uncertainty Principle states that the ___ and ___ of an electron cannot be known simultaneously. Position, mass Momentum, speed Position, charge Position, momentum10. An α-particle having a de Broglie wavelength λi collides with a stationary carbon nucleus. The α-particle moves off in a different direction as shown below.After the collision, the de Broglie wavelengths of the α-particle and the carbon nucleus are λf and λc respectively. Which of the following is a true statement related to the de Broglie wavelengths? λf = λc λi = λc λi < λf λi > λf11. The magnetic quantum number describes the: Average distance of the most electron-dens regions from the nucleus. Spatial orientation of the orbital. Shape of the orbital. Number of electrons.12. The ability of an object in quantum theory to be in more than one quantum state at the same is know as? Wave-particle duality Superposition Decoherence Nonlocality13. The spin quantum number (ms) can have a value of: 0, +1 -1/2, +1/2 -1/2, -3/2 +1, -114. The different types of subshells and corresponding number of orbitals is: S:7, p:5, d:3, f:1 S:2, p:6, d:10, f:14 S:1, p:3, d:5, f:7 N:1, l:0, m:015. Who predicted that matter acts as a wave? Heisberg Rutherford Heinrich Hertz Louis de Broglie16. The electromagnetic radiation emitted from the surface of an object due to the object's internal energy is known as? Thermal Radiation Photon Nuclear Radiation Spectra Emission17. The quantum mechanical model describes electrons as: Particles with wave-like properties Waves Small, hard spheres Particles18. The angular momentum quantum number is related to n by ___, and describes: (n-1), the spatial orientation of the molecule (n+1), the spatial orientation of the molecule (n-1), the shape of the orbital (n+1), the shape of the orbital19. Which of the following laws was the first quantum theory in physics? Uncertainty Principle Lewi's Law Planck's Law Faraday's Law20. The energy required by an electron to escape from the surface of a given metal is called? The photoelectric effect Work Function Threshold Effect Threshold frequency21. Which one of the following best shows the variation with kinetic energy E of the de Broglie wavelength λ associated with a particle?IIIIIIIV IV II I III22. A wavefunction: Is the solution to a differential equation known as a wave equation that describes the structure of an electron. Is the solution to a differential equation known as a wave equation that describes the structure of an atom. Is the differential equation used to describe the structure of an atom. Is the differential equation used to describe the structure of an electron.23 out of 22Time is Up!