PHY118 Physics
Physics: most repeated questions
Questions that have come up in more than one paper, matched by what they ask rather than exact wording. Most repeated first.
- 3×Asked in 2079, 2077, 2075Set up differential equation for an oscillation of a spring using Hooke's and Newton's second law.Answer coming5
See the wording in each paper
- Set up differential equation for an oscillation of a spring using Hooke's and Newton's second law.TU Board 2079
- Set up a differential equation for an oscillation of a spring using Hooke's and Newton's second law. Find the general solution of this equation and hence the expressions for the period, velocity,…TU Board 2077
- Set up a differential equation for an oscillation of a spring using Hooke's and Newton's second law. Find the general solution of this equation and hence the expressions for the period, velocity,…TU Board 2075
- 2×Asked in 2078, 20741. How many atomic states are there in hydrogen with n=3? 1. How are they distributed among the subshells? Label each state with the appropriates set of quantum numbers n, 1,m,m 1. Show that the number of states in a shell, that is ,states having the same n.…Answer coming5
See the wording in each paper
- 1. How many atomic states are there in hydrogen with n=3? 1. How are they distributed among the subshells? Label each state with the appropriates set of quantum numbers n, 1,m,m 1. Show that the…TU Board 2078
- 1. How many atomic states are there in hydrogen with n=3? 1. How are they distributed among the subshells? Label each state with the appropriates set of quantum numbers n, 1,m,m 1. Show that the…TU Board 2074
- 2×Asked in 2078, 2077A neutron spectroscopy a beam of mono energetic neutrons is obtained by reflecting reactor neutrons from a beryllium crystal. If separation between the atomic planes of the beryllium crystal is 0.732 A°, what is the angle between the incident neutron beam…Answer coming5
See the wording in each paper
- A neutron spectroscopy a beam of mono energetic neutrons is obtained by reflecting reactor neutrons from a beryllium crystal. If separation between the atomic planes of the beryllium crystal is…TU Board 2078
- A neutron spectroscopy a beam of mono energetic neutrons is obtained by reflecting reactor neutrons from a beryllium crystal. If separation between the atomic planes of the beryllium crystal is…TU Board 2077
- 2×Asked in 2079, 2074An oscillating block of mass 250 g takes 0.15 sec to move between the endpoints of the motion, which are 40 cm apart. Find (a) frequency and (b) amplitude of the motion, and.(c) force constant of the spring.Answer coming5
See the wording in each paper
- An oscillating block of mass 250 g takes 0.15 sec to move between the endpoints of the motion, which are 40 cm apart. Find (a) frequency and (b) amplitude of the motion, and.(c) force constant of…TU Board 2079
- An oscillating block of mass 250 g takes 0.15 sec to move between the endpoints of motion, which are 40cm apart. 1. What is the frequency of the motion? 1. What is the amplitude of the motions? 1.…TU Board 2074
- 2×Asked in 2079, 2078Derive expression for electrical conductivity of semiconductor in terms of impurity ionization energy.Answer coming5
See the wording in each paper
- Derive expression for electrical conductivity of semiconductor in terms of impurity ionization energy.TU Board 2079
- Design electrical conductivity of semiconductors. Derive expression for conductivity in terms of impurity ionization energy. Give a plot to discuss "Theoretical temperature dependence of the…TU Board 2078
- 2×Asked in 2079, 2078Explain the meaning of "fabrication of integrated circuits" Describe following processes involved in the fabrication of integrated circuits: epitaxial growth, oxidation, oxide removal and patter definition, doping and interconnection of components.Answer coming10
See the wording in each paper
- Explain the meaning of "fabrication of integrated circuits" Describe following processes involved in the fabrication of integrated circuits: epitaxial growth, oxidation, oxide removal and patter…TU Board 2079
- Describe processes involved in the fabrication of integrated circuits include epitaxial growth, oxidation, oxide removal and pattern definition, doping (impurities in the Si), and interconnection of…TU Board 2078
- 2×Asked in 2077, 2075Discuss magnetic dipole moment. What is its effect on atoms and on molecules? Explain.Answer coming5
See the wording in each paper
- 2×Asked in 2077, 2075Explain the construction and working of bipolar junction transistor (BJT)Answer coming5
See the wording in each paper
- 2×Asked in 2079, 2078The density of aluminum is 2.70 g/cm3 and its molecular weight is 26.98 g/mole. a) Calculate the Fermi energy b) If the experimental value of EF is 12 eV, What is the electron effective mass in aluminum? Aluminum is trivalent.Answer coming5
See the wording in each paper
- The density of aluminum is 2.70 g/cm3 and its molecular weight is 26.98 g/mole. a) Calculate the Fermi energy b) If the experimental value of EF is 12 eV, What is the electron effective mass in…TU Board 2079
- The density of aluminum is 2.70 g/cm^3 and its molecular weight is 26.98 g/mole. 1. Calculate the Fermi energy 1. If the experimental value of E F is 12 eV, What is the electron effective mass in…TU Board 2078
- 2×Asked in 2079, 2075The output of a digital circuit (y) is given by this expression: y = (A'B'+ B'A) ((A + B)' + C) Where A, B and C represent inputs. Draw a circuit of above equation using OR, AND and NOT gate and hence find its truth table.Answer coming5
See the wording in each paper
- The output of a digital circuit (y) is given by this expression: y = (A'B'+ B'A) ((A + B)' + C) Where A, B and C represent inputs. Draw a circuit of above equation using OR, AND and NOT gate and…TU Board 2079
- The output of a digital circuit (y) is given by this expression: y=(CB + CA)( BA) where A,B and C represent inputs. Draw a circuit of the above equation using OR, AND and NOT gate and hence find its…TU Board 2075
- 2×Asked in 2077, 2075What is the probability of finding a particle in a well of width ∝ at a position 4 from the wall if n = 1, if n = 2, if n = 3. Use the normalized wavefunction ψ(x,t) = ( 2a )^ 12 sin ( n xa )e^ iEth cut .Answer coming5
See the wording in each paper
- What is the probability of finding a particle in a well of width ∝ at a position 4 from the wall if n = 1, if n = 2, if n = 3. Use the normalized wavefunction ψ(x,t) = ( 2a )^ 12 sin ( n xa )e^ iEth…TU Board 2077
- What is the probability of finding a particle in a well of width ∝ at a position 4 from the wall if n = 1, if n = 2, if n = 3. Use the normalized wavefunction ψ(x,t) = ( 2a )^ 12 sin ( n xa )e^ iEth…TU Board 2075