Is` p= E/c `valid for electrons?

In Q.72,An electron and a photon possess the same de Broglie wavelength. If E e and E p h are, respectively, if the velocity of electron is 25% of the velocity of photon, then (E_e)/(E_(ph)) equals

Electron are accelerated through a potential difference V and protons are accelerated through a potential difference of 4 V. The de-Broglie wavelength are lamda_e and lamda_p for electrons and protons, respectively The ratio of lamda_e/lamda_p is given by ( given , m_e is mass of electron and m_p is mass of proton )

Electron are accelerated through a potential difference V and protons are accelerated through a potential difference of 4 V. The de-Broglie wavelength are lamda_e and lamda_p for electrons and protons, respectively The ratio of lamda_e/lamda_p is given by ( given , m_e is mass of electron and m_p is mass of proton )

Select the correct curve (s) : If = V Velocituy of electron in Bohr's orbit r= Radius of electron in Bohar's orbit P.E = Potential energy of electron in Bohr's orbit K.E. = Kinetic energy of electron in Bohr's orbit

If p: Number of factors of 20 are 5. q: 2 is even prime number. Then validity of p implies q and validity of contrapositive statement is ……….

Select the correct curves: If v=Velocity of electron in Bohr’s orbit, r = Radius of electron in Bohr's orbit. P.E.=Potential energy of electron in Bohr's orbit, K.E.=Kinetic energy of electron in Bohr's orbit

If the total energy of an electron is -1.51 eV in hydrogen atom then find out K.E,P.E. , orbit radius and velocity of the electron in that orbit.

If the total energy of an electron is -1.51 eV in hydrogen atom then find out K.E,P.E. , orbit radius and velocity of the electron in that orbit.

A photon has same wavelength as the de Broglie wavelength of electrons. Given C=speed of light , v= speed of electron. Which of the followitg relation is correct? [Here E_e= kinetic energy of electron, E_(ph)= energy of photon, P_e= momentum of electron and P_(ph)= momentum of photon]