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If velocities of 5 molecules of certain ...

If velocities of 5 molecules of certain gas are –7, 5, 4, –3 and 1 m/sec respectively then mean speed of molecules is (m/sec) -

A

Zero

B

20

C

4

D

`sqrt20`

Text Solution

Verified by Experts

The correct Answer is:
C
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MOTION-HEAT-2 -EXERCISE-1
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  2. The average momentum of a molecule in a sample of an ideal gas depends...

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  3. If velocities of 5 molecules of certain gas are –7, 5, 4, –3 and 1 m/s...

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  4. The molecular weight of O(2) and H(2) are 32 and 2 respectively. Then ...

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  5. If the rms speed of the nitrogen molecules of the gas at room temperat...

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  6. When unit mass of water boils to become steam at 100^(@)C, it absorbs ...

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  7. 1 kg of a gas does 20 kJ of work and receives 16 kJ of heat when it is...

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  8. An ideal system can be brought from stage A to B through four paths as...

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  9. A system is given 400 calories of heat and 1000 Joule of work is done ...

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  10. For a thermodynamic process delta Q=- 50 calorie and W =-20 calorie. I...

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  11. One mole of an ideal gas at temperature T(1) expends according to the ...

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  12. One mole of an ideal diatomic gas is taken through the cycle as shown ...

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  13. When a system is taken from state 'a' to state 'b' along the path 'acd...

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  14. In the above question, if the work done on the system along the curved...

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  15. In above question, if U(a) = 40J, value of U(b) will be

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  16. A diatomic gas of moleculer weight 30 gm/mole is filled in a container...

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  17. An ideal gas undergoes the process 1 to 2 as shown in the figure, the ...

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  18. If heat is added at constant volume, 6300 J of heat are required to ra...

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  19. A reversible adiabatic path on a P-V diagram for an ideal gas passes t...

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  20. Four curves A, B, C and D are drawn in Fig. for a given amount of gas....

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