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When an electron in hydrogen atom revolv...

When an electron in hydrogen atom revolves in stationary orbit, it

A

does not radiate light though its velocity changes

B

does not radiate light and velocity remains unchanged

C

radiates light but its velocity is unchanged

D

radiates light with the change of energy

Text Solution

Verified by Experts

The correct Answer is:
A
According to Bohr's quantisation principle, if an electron revolves in a stationary orbit which has fixed energy, will not radiate light. Since, the direction of velocity changes, so we can say its velocity changes.
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Knowledge Check

  • When electrons revolve in stationary orbits,

    A
    there is no change in energy level
    B
    they become stationary
    C
    they are gaining kinetic energy
    D
    there is increase in energy

  • When an electron revolves in a stationary orbit then

    A
    it absorbs energy
    B
    It gains kinetic energy
    C
    it emits radiation
    D
    Its energy remains constant

  • In the ground state, the electron in the hydrogen atom moves in a circular orbit of radius r_0 . When the hydrogen atom goes in the second excited state, the radius of the electron orbit is increased by

    A
    `3r_0`
    B
    `8r_0`
    C
    `6r_0`
    D
    `5r_0`

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    When electron in hydrogen atom jumps from second orbit to first orbit, the wavelength of radiation emitted is lambda . When electron jumps from third orbit to first orbit, the wavelength of emitted radiation would be _______________ .

    In a hydrogen atom, an electron carrying charge 'e' revolves in an orbit of radius 'r' with speed 'v' . Obtain an expression for the magnitude of magnetic moment of a revolving electron.

    The wavelength or radiations emitted is lambda_(0) when an electron in hydrogen atom jumps from the third orbit to second. If in the H-atom itself, the electron jumps from fourth orbit to second orbit, the wavelength of emitted radiation will be

    When the electron in a hydrogen atom jumps from the second orbit to the first orbit , the wavelength of the radiation emitted is lamda . When the electron jumps from the third orbit to the first orbit , of the same atom , the wavelength of the emitted radiation would be

    Energy of electron of hydrogen atom in second Bohr orbit is

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