NCERT Exemplar Class 12
(a) Using the Bohr’s model calculate the speed of the electron in a hydrogen atom in the n = 1, 2, and 3 levels. (b) Calculate the orbital period in each of these levels
13
Sep
(a) Using the Bohr’s model calculate the speed of the electron in a hydrogen atom in the n = 1, 2, and 3 levels. (b) Calculate the orbital period in each of these levels (a) Using the Bohr’s model calculate the speed of the electron in a hydrogen atom in the n = 1 2 [...]
A hydrogen atom initially in the ground level absorbs a photon, which excites it to the n = 4 level. Determine the wavelength and frequency of the photon.
13
Sep
A hydrogen atom initially in the ground level absorbs a photon, which excites it to the n = 4 level. Determine the wavelength and frequency of the photon. A hydrogen atom initially in the ground level absorbs a photon which excites it to the n = 4 level. Determine the wavelength and frequency of the [...]
The ground state energy of hydrogen atom is – 13.6 eV. What are the kinetic and potential energies of electron in this state?
13
Sep
The ground state energy of hydrogen atom is – 13.6 eV. What are the kinetic and potential energies of electron in this state? The ground state energy of hydrogen atom is – 13.6 eV. What are the kinetic and potential energies of electron in this state? September 13, 2021 Category: Chapter 12 - Atoms , [...]
A difference of 2.3 eV separates two energy levels in an atom. What is the frequency of radiation emitted when the atom makes a transition from the upper level to the lower level?
13
Sep
A difference of 2.3 eV separates two energy levels in an atom. What is the frequency of radiation emitted when the atom makes a transition from the upper level to the lower level? A difference of 2.3 eV separates two energy levels in an atom. What is the frequency of radiation emitted when the atom [...]
what is the shortest wavelength present in the Pascal series of spectral lines ?
13
Sep
what is the shortest wavelength present in the Pascal series of spectral lines ? what is the shortest wavelength present in the Pascal series of spectral lines ? September 13, 2021 Category: Chapter 12 - Atoms , NCERT Exemplar Class 12 , Physics ,
You are given a 2μF parallel plate capacitor. How would you establish an instantaneous displacement current of 1mA in the space between its plates?
04
Sep
You are given a 2μF parallel plate capacitor. How would you establish an instantaneous displacement current of 1mA in the space between its plates? You are given a 2μF parallel plate capacitor. How would you establish an instantaneous displacement current of 1mA in the space between its plates? September 4, 2021 Category: Chapter 8 - [...]
Show that the magnetic field B at a point in between the plates of a parallel-plate capacitor during charging is εoμr/2 dE/dt (symbols having usual meaning).
04
Sep
Show that the magnetic field B at a point in between the plates of a parallel-plate capacitor during charging is εoμr/2 dE/dt (symbols having usual meaning). Show that the magnetic field B at a point in between the plates of a parallel-plate capacitor during charging is εoμr/2 dE/dt (symbols having usual meaning). September 4, 2021 [...]
The magnetic field of a beam emerging from a filter facing a floodlight is given by B0 = 12 × 10^–8 sin (1.20 × 10^7 z – 3.60 × 10^15 t) T. What is the average intensity of the beam?
04
Sep
The magnetic field of a beam emerging from a filter facing a floodlight is given by B0 = 12 × 10^–8 sin (1.20 × 10^7 z – 3.60 × 10^15 t) T. What is the average intensity of the beam? The magnetic field of a beam emerging from a filter facing a floodlight is given [...]
A variable frequency AC source is connected to a capacitor. How will the displacement current change with decrease in frequency?
04
Sep
A variable frequency AC source is connected to a capacitor. How will the displacement current change with decrease in frequency? A variable frequency AC source is connected to a capacitor. How will the displacement current change with decrease in frequency? September 4, 2021 Category: Chapter 8 - Electromagnetic Waves , NCERT Exemplar Class 12 , [...]
The charge on a parallel plate capacitor varies as =q_0 cos 2pi ft. The plates are very large and close together (area=a, separation=d). Neglecting the edge effects, find the displacement current through the capacitor.
04
Sep
The charge on a parallel plate capacitor varies as =q_0 cos 2pi ft. The plates are very large and close together (area=a, separation=d). Neglecting the edge effects, find the displacement current through the capacitor. find the displacement current through the capacitor. separation=d). Neglecting the edge effects The charge on a parallel plate capacitor varies as [...]