If the de-Broglie wavelength of an electron is equal to 10−3 times the wavelength of a photon of frequency 6×1014 Hz, then the speed of electron is equal to : (Speed of light =3 ×108 m/s Planck’s constant=6.63×10−34 J.s Mass of electron =9.1×10−31 kg) |
|||
(a) |
1.45× m/s |
(b) |
1.7×106 m/s |
(c) |
1.8×106 m/s |
(d) |
1.1 ×106 m/s |
If the de-Broglie wavelength of an electron is equal to 10−3 times the wavelength of a photon of frequency 6×1014 Hz, then the speed of electron is equal to : (Speed of light =3 ×108 m/s Planck’s constant=6.63×10−34 J.s Mass of electron =9.1×10−31 kg) |
|||
(a) |
1.45× m/s |
(b) |
1.7×106 m/s |
(c) |
1.8×106 m/s |
(d) |
1.1 ×106 m/s |