Question

The de-Broglie wavelength of a neutron in thermal equilibrium with heavy water at a temperature T (Kelvin) and mass m, is

• A. $\frac {h}{mkT}$
• B. $\frac {h}{3mkT}$
• C. $\frac {2h}{3mkT}$
• D. $\frac {2h}{mkT}$

Answer 1

Answer: (B)

$\frac {h}{3mkT}$

Answer 2

The correct option is (B): $\frac {h}{3mkT}$.