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At 200^(@)C, hydrogen molecules have vel...

At `200^(@)C`, hydrogen molecules have velocity `2.4 xx 10^(5) cm s^(-1)` The de Broglie wavelength in this case is approximately

A

`2Å`

B

`1000 Å`

C

`100 Å`

D

`10 Å`

Text Solution

Verified by Experts

The correct Answer is:
A
`lambda = (6.62 xx 10^(-27))/(2 xx 1.66 xx 10^(-24) xx 10^(5))`
`= 2 xx 10^(-8)cm =2Å`.
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