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Read the two statements carefully to mark the correct option out of the options given below.
Statement-1: The de-Broglie wavelength of a molecule varies inversely as the square root of temperature.
Statement-2: Root mean square speed of a molecule depends on temperature.

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If both the statements are true and the Statement-2 is the correct explanation Statement - 1

If Statement- 1 is false but Statement-2 is true

If both the statements are true but Statement-2 is not the correct explanation of the Statement – 1

If Statement- 1 true but Statement-2 is false

answer is A.

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Detailed Solution

$λ = \frac{h}{p} = \frac{h}{m v_{γ s}}, v_{γ s} = \sqrt{\frac{3 k T}{m}}$

$∴ λ = \frac{h}{\sqrt{3 m k T}}$

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