Dual Nature of ...

A particle of mass M at rest decays into particles of masses $$m_{1} \ and  \ m_{2}$$ having non -zero velocities. The ratio of the de broglie wavelengths of the particles $$\lambda _{1}/\lambda _{2}$$ is :

De-Broglie wavelength associated with thermal neutrons at room temperature of $$27^{0}$$C is :

The ratio of wavelength of deutron and proton accelerated through the same potential difference will be-

The minimum frequency v of continuous X-rays is related to the applied potential difference V as?

If the mass of neutron $$= 1.7 \times 10 ^ { - 27} \mathrm { kg }$$ . Then the de broglie wavelength of neutron of energy3$$\mathrm { eV }$$ is

If Bohr radius is $$r_{0},$$ the corresponding de Broglie wavelength of the electron is 

A microscope using suitable photons is employed to locate an electron in an atom within a distance of $$0.1 \ \mathring {A}$$. The uncertainty of its velocity is 

What is the maximum wavelength of the Lyman series of $$He^+$$ ion ?

Photons of wavelength $$6620A^0 $$ are incident normally on a perfectly reflecting screen. Calculate the number of photons paper per second falling on the screen as the total power of photons such that the exerted force is 1N.

When an electron de-excited back from $$(n+1)^th$$ state to $$n^th$$ state in a hydrogen like atoms, wavelength of radiation emitted is $$\lambda_{1}(n>>1)$$. In the same atom de-broglies wavelength associated with an electron in $$n^th$$ state is $$\lambda_{2}$$. Then $$\dfrac{\lambda_{1}}{\lambda_{2}}$$ is proportional to