Question

Assertion : The de-Broglie wavelength of a molecule varies inversely as the square root of temperature.

Reason : The root mean square velocity of the molecule depends on the temperature.

• A. Both assertion and reason are true and the reason is the correct explanation of the assertion.
• B. Both assertion and reason are true but reason is not the correct explanation of the assertion.
• C. Assertion is true but reason is false.
• D. Assertion and reason both are false.
• E. Assertion is false but reason is true.

Answer 1

The correct option is A

Both assertion and reason are true and the reason is the correct explanation of the assertion.

De-Broglie wavelength associated with gas molecules varies as $\lambda \infty \frac{1}{\sqrt{T}}$