Question

The velocity of particle A is 0.1 ms⁻¹ and that of particle B is 0.05 ms⁻¹. If the mass of particle B is five times that of particle A, then the ratio of de-Broglie wavelengths associated with the particles A and B is
(a) 2 : 5
(b) 3 : 4
(c) 6 : 4
(d) 5 : 2

Answer 1

${\huge {\mathfrak {Answer :-}}}$

➡️ Ratio of wavelengths is

= 0.1 / (0.05 * 5)

= 0.1 / 0.25

= 2/5

= 2 : 5.

That's it..