Atoms Test - 36...

If in hydrogen atom, radius of $$n^{th}$$ Bohr orbits is $$r_n$$, frequency of revolution of electron in $$n^{th}$$ orbit is $$f_n$$, choose the correct option.

The specific charge for cathode rays is

A photon will have less energy, if its 

Photons have the following characteristics:
(i) energy of a photon $$E=h\gamma$$
(ii) photons travel with the velocity of light
(iii) photons are emitted when light of frequency $$\gamma$$ is emitted by an atom

Let the energy of the electron confined in the atom be $$E$$ . At what $$F_0$$ would the atom ionize?

The Bohr's orbit radius for the hydrogen atom (n = 1) is approximately 0.53 A. The radius for the first excited state (n = 2) orbit is:

To get line spectrum, the substances are excited in their

For the same kinetic energy, the momentum shall be maximum for

The radius of a nucleus with mass number 16 is 3 fm. The radius of another nucleus with mass number 128 is

The spectrum of light emitted by an electric bulb is an example of