cse • paper_1 • thermal_physicscse-1988-subject-04-006
Mean free path — UPSC CSE 1988 Physics PYQ
Buy PYQ Solution Manual →Calculate the mean free path of helium atoms at NTP, the coefficient of viscosity being 190 \times 10^{-7}\text{ kg m}^{-1}\text{ s}^{-1}. 1\text{ atmospheric pressure} = 0.076 \times 136 \times 10^3 \times 9.81\text{ Nm}^{-2}.
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