Question

66. A ball has a mass of 0.1 kg and its velocity is 40 m/s.
The de Broglie wavelength will be
(a)1.66x10-34 m
(b) 2x10-34 m
(c) 3x10-34 m
(d) 4x10-34 m

Answer 1

Answer:

a) 1.66x10-34m

Explanation:

lamda = h/mv

= 6.626x10-34/0.1x40

= 6.626×10-34/10-1x4x10

= 6.626 x10-34/4

= 1.656 x10-34 m

hope it helps