Physics-
General
Easy
Question
Hydrogen atom does not emit X-rays because
- It has signal electron
- It has no neutron
- It has single neutron
- Its energy levels are too close to each other
The correct answer is: It has single neutron
Related Questions to study
Physics-
The shortest wavelength of X-rays emitted from an X-rays tube depends upon
The shortest wavelength of X-rays emitted from an X-rays tube depends upon
Physics-General
Physics-
According to Maxwell’s hypothesis, a changing electric field gives rise to
According to Maxwell’s hypothesis, a changing electric field gives rise to
Physics-General
Physics-
The energy of X-ray photon is 2200 eV. Its frequency would be
The energy of X-ray photon is 2200 eV. Its frequency would be
Physics-General
Physics-
The refractive index and the permeability of a medium are respectively. The relative permittivity of the medium is nearly
The refractive index and the permeability of a medium are respectively. The relative permittivity of the medium is nearly
Physics-General
Physics-
The amplitude of electric field in a parallel beam of light of intensity is
The amplitude of electric field in a parallel beam of light of intensity is
Physics-General
Physics-
A lasser beam is sent to the moon and reflected back to earth by ay mirror placed on the moon by an astronaut. If the moon is 384000 km from earth, how long does it take the light to make the round trip?
A lasser beam is sent to the moon and reflected back to earth by ay mirror placed on the moon by an astronaut. If the moon is 384000 km from earth, how long does it take the light to make the round trip?
Physics-General
Physics-
Maxwell in his famous equation of electromagnetism introduced the concept of
Maxwell in his famous equation of electromagnetism introduced the concept of
Physics-General
Physics-
In a phase electromagnetic wave, the electric filed oscillates sinusoidally at a frequency of Hz and amplitude . The wavelength of the wave is
In a phase electromagnetic wave, the electric filed oscillates sinusoidally at a frequency of Hz and amplitude . The wavelength of the wave is
Physics-General
Physics-
0The correct sequence of the increasing wavelength of the given radiation sources is
0The correct sequence of the increasing wavelength of the given radiation sources is
Physics-General
Physics-
Electric fields induced by changing magnetic fields are
Electric fields induced by changing magnetic fields are
Physics-General
Physics-
The magnetic field of an Electromagnetic Wave is given by
The wavelength of theElectromagnetic Wave is
The magnetic field of an Electromagnetic Wave is given by
The wavelength of theElectromagnetic Wave is
Physics-General
Physics-
What is order of energy of X-rays (EX), radio waves (ER) and microwave (EM)?
What is order of energy of X-rays (EX), radio waves (ER) and microwave (EM)?
Physics-General
Physics-
A plane electromagnetic wave of intensity 10 strikes a small mirror of area , held perpendicular to the approaching wave. The radiation force on the mirror will be
A plane electromagnetic wave of intensity 10 strikes a small mirror of area , held perpendicular to the approaching wave. The radiation force on the mirror will be
Physics-General
Physics-
If and represent the permittivity and permeability of vacuum and and represent the permittivity and permeability of medium, then refractive index of the medium is given by
If and represent the permittivity and permeability of vacuum and and represent the permittivity and permeability of medium, then refractive index of the medium is given by
Physics-General
Physics-
The magnetic field between the plate of a capacitor when is given by
The magnetic field between the plate of a capacitor when is given by
Physics-General