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

Question ID - 50303 | SaraNextGen Answer

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