Dual Nature of ...

The wavelength $$\lambda_e$$ an electron and $$\lambda_P$$ of a photon of same energy $$E$$ are related by:

A $$ \alpha $$ particle moves in a circular path of radius 0.83 cm in the presence of a magnetic field is $$ 0.25 Wb/m^2 $$. the de brogile wavelength association with the particle will be

If an electron is moving with a velocity of $$1.1\times {10}^{6}m{s}^{-1}$$ de broglie wave length approximately is:

The de Broglie wavelength is $$\lambda $$, the energy of electron is-

The de - Broglie  wavelength of an  electron accelerated  by  an electric potential of  v volts is given by : 

According t Bohr's theory, the ratio n of the times taken by the electron in a hydrogen atom to complete one revolution in orbits corresponding to ground and first excited states is :

The reaction, $$2B^-_{(aq)} + Sn^{2+}_{(aq)} \rightarrow Br_{2(1)} + Sn_{(s)}$$ with the standard potentials, $$E^o_{Sn} = -0.114 \,V, E^o_{Br_2} = +1.09 \,V$$, is

The work function of the metal, if the kinetic energies of the photoelectrons are $$E_{1}$$ and $$E_{2}$$, with wavelengths of incident light $$\lambda_{1}$$ and $$\lambda_{2}$$, is

Two particles A and B of same mass have their de-Broglie wavelengths in the ratio $$X_A:X_B=K:1$$. Their potential energies $$U_A:U_B=1:K^2$$
The ratio of their total energies is $$E_A:E_B$$ is 

Representing the stopping potential V along the y-axis and $$\dfrac{1}{\lambda}$$ along the x-axis for a given
photocathode, the curve is a  straight line, the intercept on the y-axis is equal to