An electron with kinetic energy 5eV is incident on a hydrogen atom in its ground state. The collision
(a) must be elastic
(b) may be partially elastic
(c) must be completely inelastic
(d) may be completely inelastic.
1 Answers
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The kinetic energy of an object of mass, m moving with a velocity of 5 m s −1 is 25 J. What will be its kinetic energy
Expression for kinetic energy Ek= ½ mv2 m = Mass of object v = Velocity of the object in ms−1 Given that kinetic energy, Ek=25J (i) If the velocity of an object is doubled, then...
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(a) Define kinetic energy of an object. Can kinetic energy of an object be negative? Give reason.
(a) Kinetic energy of an object is defined as the energy possessed by a body by virtue of its motion. It is given by, K.E = 1/2 mv2 No, the kinetic energy...
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The ground state energy of hydrogen atom is −13.6 eV.
Ground state energy of hydrogen atom, E = − 13.6 eV This is the total energy of a hydrogen atom. Kinetic energy is equal to the negative of the total energy. Kinetic...
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In an inelastic collision, the final kinetic energy is always less than the initial kinetic energy of the system.
True In an inelastic collision, the final kinetic energy is always less than the initial kinetic energy of the system. This is because in such collisions, there is always a loss...
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The energy of an atom (or ion) in its ground state is - 54.4eV.
The correct answer is (c) He+
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A hydrogen atom in ground state absorbs 10.2eV of energy.
(a) The orbital angular momentum of the electron is increased by 1.05 x 10-34J-s
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An electron with kinetic energy 5eV is incident on a hydrogen atom in its ground state.
(a) must be elastic
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Consider a photon of continuous X-ray coming from a Coolidge tube. Its energy comes from (a) the kinetic energy of the striking electron
(a) the kinetic energy of the striking electron
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Find the temperature at which the average thermal kinetic energy is equal to the energy needed to take a hydrogen atom
K = 8.62 x10–5 eV/k K.E. of H2 molecules = 3/2 KT Energy released, when atom goes from ground state to no = 3 =>13.6 (1/1 – 1/9) => 3/2 KT = 13.6(1/1...
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A neutron having kinetic energy 12.5 eV collides with a hydrogen atom at rest. Nelgect the difference in mass between the neutron and the hydrogen
In one dimensional elastic collision of two bodies of equal masses. The initial velocities of bodies are interchanged after collision. Velocity of the neutron after collision is zero. Hence, it has zero energy.
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