The de-broglie wavelength of a photon is twice the de-broglie wavelength of an electron. The speed of the electron is `v_(e)=c/100`. Then

The de-Broglie wavelength of photon is twice the de-Broglie wavelength of an electron .The speed of the electron is v_(e)=(c )/(100) .Then

The de-Broglie wavelength of an electron in the first Bohr orbit is

The de-Broglie wavelength of an electron in the first Bohr orbit is