QUESTION: Suppose the speed of electrons present in the first shell of an atom is 50% of the speed of light. If the uncertainty in velocity is , what is the uncertainty in the position of this electron? Click Here For The Concept  SOLUTION: Let’s suppose: is the mass of the electron, and is the […]

 QUESTION:  a) If an electron’s position can be measured to a precision of , what will be the uncertainty in its momentum? b) If its momentum is equal to its uncertainty then what will be the electron’s wavelength? Click Here For The Concept  SOLUTION: Let’s suppose: is the mass of the electron,  is the uncertainty

 QUESTION: A particle’s energy is measured with an uncertainty of . What will be the smallest possible uncertainty in our knowledge of when the particle had the given uncertainty of energy? Click Here For The Concept  SOLUTION: Let’s suppose: is the uncertainty in energy, and is the uncertainty in time. Given: To find: We know

 QUESTION: The uncertainty in an electron’s position is . a) Find the minimum uncertainty in its momentum. b) Find the minimum uncertainty in its velocity. c) What will be the kinetic energy of the electron if the momentum is equal to the uncertainty in momentum? Click Here For The Concept  SOLUTION: Let’s suppose: is the

 QUESTION: Which one of the following concepts explains why heavy nuclei do not follow the line?             a) Pauli exclusion principle b) transmutation c) Coulomb’s repulsion d) Heisenberg uncertainty principle e) particle-wave duality Click Here For The Concept  SOLUTION: Answer: c) The reasons for the heavy nuclei having more neutrons

 QUESTION: The location of a particle is measured with an uncertainty of . a) What will be the resulting minimum uncertainty in the particle’s momentum? b) If the mass of the particle is then what will be the minimum uncertainty in the velocity measurement? Click Here For The Concept  SOLUTION: Let’s suppose: is the mass