Quantum Physics Questions & Answers

Quantum Physics Questions & Answers Absorption and Emission spectrum - CORRECT ANSWER- The spectrum of light absorbed or emitted by an element. For example, passing white light through hydrogen gas results in particular frequencies/photons being absorbed. These same frequencies/photons are later emitted by the atom. Blackbody - CORRECT ANSWER- Has the ideal property that it absorbs all the radiation falling on it and reflects none. Blackbody Radiation - CORRECT ANSWER- Radiation properties are independent of the material. The maximum of the distribution shifts to smaller wavelengths as the temperature is increased. The total power radiated increases with the temperature. One of the outstanding exceptions that classical physics could not explain, dubbed the "ultraviolet catastrophe" by Paul Ehrenfest. Bohr radius - CORRECT ANSWER- 0.53 E-10 m, orbit of the hydrogen atom, represented by na_0, where n is an integer called the principal quantum number. Bohr's correspondence principle - CORRECT ANSWER- In the limits where classical and quantum theories should agree, the quantum theory must reduce to the classical result. Bohr's principle of complementarity - CORRECT ANSWER- It is not possible to describe physical observables simultaneously in terms of both particles and waves. Boundary conditions - CORRECT ANSWER- An acceptable wave function must satisfy the Schrodinger equation and : 1) In order to avoid infinite probabilities, (PSI) must be finite everywhere, 2) In order to avoid multiple values of the probability, (PSI) bust be single values, 3)