Physics-
General
Easy
Question
The radiation force experienced by body exposed to radiation of intensity I, assuming surface of body to be perfectly absorbing is:
The correct answer is:
Related Questions to study
physics-
STATEMENT - 1 : If the accelerating potential in an X-ray tube is increased, the wavelengths of the characteristic X-rays do not change
STATEMENT - 2 : When an electron beam strikes the target in an X-ray tube, part of the kinetic energy is converted into X-ray energy
STATEMENT - 1 : If the accelerating potential in an X-ray tube is increased, the wavelengths of the characteristic X-rays do not change
STATEMENT - 2 : When an electron beam strikes the target in an X-ray tube, part of the kinetic energy is converted into X-ray energy
physics-General
chemistry-
A compound of vanadium has a magnetic moment1.73B.M.Theelectronicconfiguration of vanadiumion in the compound is-
A compound of vanadium has a magnetic moment1.73B.M.Theelectronicconfiguration of vanadiumion in the compound is-
chemistry-General
chemistry-
The following graph between 
probability density and distance from then ucleus represents-
The following graph between probability density and distance from then ucleus represents-
chemistry-General
chemistry-
If Hund’s rule is followed, magnetic moment of Fe2+,Mn+ and Cr all having 24 electrons will be in order-
If Hund’s rule is followed, magnetic moment of Fe2+,Mn+ and Cr all having 24 electrons will be in order-
chemistry-General
chemistry-
Wave number of as pectralline for a given transition is xcm–1 for He+, then its value for Be3+forthesametransitionis-
Wave number of as pectralline for a given transition is xcm–1 for He+, then its value for Be3+forthesametransitionis-
chemistry-General
chemistry-
In the following transition which statement is correct
In the following transition which statement is correct
chemistry-General
physics-
In a mixture of H – He+ gas (He+ is singly ionized He atom), H atoms and He+ ions are excited to their respective first excited states Subsequently, H atoms transfer their total excitation energy to He+ ions (by collisions) Assume that the Bohr model of atom is exactly valid.
The ratio of the kinetic energy of the n = 2 electron for the H atom to that of He+ ion is:
In a mixture of H – He+ gas (He+ is singly ionized He atom), H atoms and He+ ions are excited to their respective first excited states Subsequently, H atoms transfer their total excitation energy to He+ ions (by collisions) Assume that the Bohr model of atom is exactly valid.
The ratio of the kinetic energy of the n = 2 electron for the H atom to that of He+ ion is:
physics-General
physics-
In a mixture of H – He+ gas (He+ is singly ionized He atom), H atoms and He+ ions are excited to their respective first excited states Subsequently, H atoms transfer their total excitation energy to He+ ions (by collisions) Assume that the Bohr model of atom is exactly valid.
The quantum number n of the state finally populated in He+ ions is :
In a mixture of H – He+ gas (He+ is singly ionized He atom), H atoms and He+ ions are excited to their respective first excited states Subsequently, H atoms transfer their total excitation energy to He+ ions (by collisions) Assume that the Bohr model of atom is exactly valid.
The quantum number n of the state finally populated in He+ ions is :
physics-General
physics-
Given X-ray spectrum is for a Coolidge tube having accelerating potential V If accelerating potential is decreased to V/4, then 
becomes four times with change in anode element If Z is the atomic number of the original element, then the atomic number of new element is (neglect screening effect).
Given X-ray spectrum is for a Coolidge tube having accelerating potential V If accelerating potential is decreased to V/4, then becomes four times with change in anode element If Z is the atomic number of the original element, then the atomic number of new element is (neglect screening effect).
physics-General
physics-
In a photoelectric experiment anode potential is plotted against plate current
In a photoelectric experiment anode potential is plotted against plate current
physics-General
chemistry-
How many electrons in an atom with z=104 can have(n+
)=8-
How many electrons in an atom with z=104 can have(n+)=8-
chemistry-General
chemistry-
Which orbital is represented by the complete wavefunction Ψ420 :
Which orbital is represented by the complete wavefunction Ψ420 :
chemistry-General
chemistry-
Which orbital is represented by the complete wavefunction Ψ420 :
Which orbital is represented by the complete wavefunction Ψ420 :
chemistry-General
physics-
If the atom 100Fm257 follows Bohr model and the radius of last orbit of 100Fm257 is n times the Bohr radius, then find n
If the atom 100Fm257 follows Bohr model and the radius of last orbit of 100Fm257 is n times the Bohr radius, then find n
physics-General
physics-
The intensity of X-rays from a coolidge tube is plotted against wavelength l as shwon in the figure The minimum wavelength found is l c and the wavelength of the Ka line is kl As the accelerating voltage is increased
The intensity of X-rays from a coolidge tube is plotted against wavelength l as shwon in the figure The minimum wavelength found is l c and the wavelength of the Ka line is kl As the accelerating voltage is increased
physics-General
