# What is the De Broglie Wavelength Of A Bullet of Mass 0.040 Kg Travelling at the Speed of 1.0 Km/S - Physics

What is the de Broglie wavelength of a bullet of mass 0.040 kg travelling at the speed of 1.0 km/s

#### Solution

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

De Broglie wavelength of the bullet is given by the relation:

lambda = h/mv

= (6.6 xx 10^(-34))/(0.040 xx 1000) = 1.65 xx 10^(-35) m

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#### APPEARS IN

NCERT Class 12 Physics Textbook
Chapter 11 Dual Nature of Radiation and Matter
Q 15.1 | Page 408