The Total solution for NCERT class 6-12
What is the de Brogliewavelength of
(a) a bullet of mass 0.040 kgtravelling at the speed of 1.0 km/s,
(b) a ball of mass 0.060 kgmoving at a speed of 1.0 m/s, and
(c) a dust particle of mass1.0 × 10−9 kg drifting with a speed of 2.2 m/s?
(a)Mass of the bullet, m =0.040 kg
Speed of the bullet, v =1.0 km/s = 1000 m/s
Planck’s constant, h = 6.6× 10−34 Js
(b) Mass of the ball, m =0.060 kg
Speed of the ball, v = 1.0m/s
De Broglie wavelength ofthe ball is given by the relation:
(c)Mass of the dustparticle, m = 1 × 10−9 kg
Speed of the dust particle, v =2.2 m/s
De Broglie wavelength ofthe dust particle is given by the relation: