Momentum of a Photon
Momentum of a Photon: Overview
This topic covers concepts, such as, Momentum of Photon & Derivation of De Broglie Equation etc.
Important Questions on Momentum of a Photon

Does, de Broglie hypothesis have any relevance to macroscopic matter?

The de Broglie equation is one of the equations that is commonly used to define the wave properties of matter. It basically describes the wave nature of the _____.

The de Broglie equation is one of the equations that is commonly used to define the wave properties of matter. It basically describes the wave nature of the electron.


The total momentum delivered (for complete absorption) of energy flux of falling on a non-reflecting surface of surface area at normal incidence, during is found be units. Calculate the value of .

A free nucleus of mass amu, initially at rest emits gamma photon. The energy of the photon is . The kinetic energy of recoiling nucleus is approximately in is. [Take : amu ]

A (kilo-watt) laser beam of wavelength is used to levitate a thin aluminium disk of same area as the cross-section of the beam. The laser light is reflected by the aluminium disk without any absorption. The mass of the foil is close to,

A hydrogen atom with a velocity absorbs a photon of wavelength and stops. If the mass of hydrogen atom is , the value of is (use )

The energy of a photon of light beam is twice that of photon of another light beam . Then ratio of their momentum is

Light with an energy flux of falls on a non-reflecting surface at normal incidence. If the surface has an area of 20 . The total momentum delivered for complete absorption in one hour is

The linear momentum of photon is p. The wavelength of photon is then (h is Planck constant)

Among the following statements, the one incorrect about photon is

Calculate the energy of a photon with momentum -, given Planck's constant to be

A parallel beam of light is incident normally on a plane surface absorbing 40% of the light and reflecting the rest. If the incident beam carries 60 W of power, the force exerted by it on the surface is

A perfectly reflecting mirror has an area of 1 cm2. Light energy is allowed to fall on it for 1h at the rate of 10 Wcm-2. The force that acts on the mirror is

When an electron jumps from a level to momentum of the recoiled hydrogen atom will be

An atom of mass which is in the state of rest emits a photon of wavelength As a result, the atom will deflect with the kinetic energy equal to ( is Planck's constant)

An atom of mass which is in the state of rest emits a photon of wavelength As a result, the atom will deflect with the kinetic energy equal to ( is Planck's constant)

The momentum of a photon of energy 1 MeV in kg m/s will be
