MCQ
If the fundamental frequency of string is $220 \,cps$, the frequency of fifth harmonic will be ......... $cps$
- A$44$
- B$55$
- ✓$1100$
- D$440$
$f_5=5\times f_1=5\times 220=1100\;cps$
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$(I)$ The average speed of molecules is larger than root mean square speed.
$(II)$ Mean free path of molecules is larger than the mean distance between molecules.
$(III)$ Mean free path of molecules increases with temperature.
$(IV)$ The rms speed of nitrogen is smaller than oxygen molecule.
Which of the above statements are correct?
