Two hydrogen atoms are in excited state with electron residing in `n = 2`. The first one is moving towards left and emits a photon of energy `E_(1)` toward right . The second one is moving toward right with the same speed and emits a photon of energy `E_(2)` toward left. Taking recoil of nucleus into account, during the emission process

Two hydrogen atoms are in excited state with electrons residing in n = 2 . First one is moving towards left and emits a photon of energy E_(1) towards right. Second one is moving twoards left with same speed and emits a photon of energy E_(2) towards left. Taking recoil of nucleus into account during emission process

Two hydrogen atoms are in excited state with electrons in n=2 state.First one is moving to wards left and emits a photon.' of energy E_(1) towards right. Second one is moving towards right with same speed and emits a photon of energy E_(2) towards right. Taking recoil of nucleus.into account during_emission process :

Two hydrogen atoms are in excited state with electrons in n=2 state.First one is moving to wards left and emits a photon.' of energy E_(1) towards right. Second one is moving towards right with same speed and emits a photon of energy E_(2) towards right. Taking recoil of nucleus.into account during_emission process :

A system is shown in the figure. Block A is moving with 1m//s towards left. Wedge is moving with 1m//s towards right. Then speed of the block B will be :

A system is shown in the figure. Block A is moving with 1m//s towards left. Wedge is moving with 1m//s towards right. Then speed of the block B will be :

A hydrogen like species with atomic number Z is present in a higher excited state (n) . This electron can make transition to the first excited level by successively emitting two photons of energy 2.64 eV and 48.36 eV . This electron can also make transition to third excited state by emitting three photons of energy 2.64 eV , 2. 66 eV and 4.9 eV . Identify the hydrogen like species involved .

A stationary hydrogen atom in the first excited state emits a photon. If the mass of the hydrogen atom is m and its ionization energy is E, then the recoil velocity acquired by the atom is [speed of light = c]

A stationary hydrogen atom in the first excited state emits a photon. If the mass of the hydrogen atom is m and its ionization energy is E, then the recoil velocity acquired by the atom is [speed of light = c]

When a hydrogen atom emits a photon during a transition from n = 4 to n = 2, its recoil speed is about ,