Atoms Test - 10...

A diatomic molecule is made of two masses $$m_1$$ and $$m_2$$ which are separated by a distance $$r$$. If we calculate its rotational energy by applying Bohr's rule of angular momentum,its energy will be given by  ($$n$$ is an integer)

Hydrogen atom is excited from ground state to another state with principal quantum number equal to $$4$$. Then the number of spectral lines in the emission spectra will be.

The transition from the state $$n = 4$$ to $$n = 3$$ in a hydrogen like atom results in ultraviolet radiation. Infrared radiation will be obtained in the transition from

The acceleration of an electron in the first orbit of the hydrogen atom $$(n =1)$$ is : 

An alpha nucleus of energy $$\overline{2}$$ mv bombards a heavy nuclear target of charge Ze. Then the distance of closest approach for the alpha nucleus will be proportional to 

The time by a photo-electron to come out after the photon strikes is approximately 

According to Bohr's theory, the time averaged magnetic field at the centre (i.e nucleus) of a bydrogen atom due to the motion of electrons in the $$n^{th}$$ orbit is propotional to : $$(n =$$ principal quantum number$$)$$

If one were to apply Bohr model to a particle '$$m$$' and charge '$$q$$' moving in a plane under the influence of a magnetic field 'B', the energy of the charged particle in the $$ n^{th}$$ level will be.

The time period of revolution of electron in its ground state orbit in a hydrogen atom is $$1.6\times 10^{-16}$$ s. The frequency of revolution of the electron in its first excited state (in $$s^{-1}$$) is:

Match List - I (Experiment performed) with List - II (Phenomena discovered/ associated) and select the correct option from the options given below the lists :