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Physics · PYQ NEET UG 2017
हिन्दीThe de-Broglie wavelength of a neutron in thermal equilibrium with heavy water at a temperature \( T \) (Kelvin) and mass \( m \), is:
Correct answer · Option 2
\( \frac{h}{\sqrt{3mkT}} \)
Explanation
Kinetic energy \( E = \frac{3}{2}kT \). De-Broglie wavelength \( \lambda = \frac{h}{\sqrt{2mE}} = \frac{h}{\sqrt{3mkT}} \).
