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At what temperature will the particles i...

At what temperature will the particles in a sample of helium gas have an rms speed of `1.0 km//s` ?

A

160 K

B

80 K

C

260 K

D

100 K

Text Solution

Verified by Experts

The correct Answer is:
A
`v_(rms) = sqrt (3 R T)/M`
`:. T = (mv_("rms")^(2))/(3 R)= ((4 xx 10^-3)(10^3)^2)/((3 xx 8.31))`
= `160 K`.
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