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Air pressure in the tyres of a car durin...

Air pressure in the tyres of a car during motion is

A

Increases

B

decreases

C

remain constant

D

first increases then decrease

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A
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(A): Air pressure in a car tyre increases during driving. (R) : Absolute zero temperature is not zero energy temperature.

Explain why (a) Two bodies at different temperatures T_(1) and T_(2) if brought in thermal contact do not necessarily settle to the mean temperature (T_(1) + T_(2))//2 . (b) The coolant in a chemical or a nuclear plant (i.e., the liquid used to prevent the different parts of a plant from getting too hot) should have high specific heat. (c) Air pressure in a car tyre increases during driving. (d) The climate of a harbour town is more temperate than that of a town in a desert at the same latitude.

A car is driven round a curved path of radius 18 m without the danger of skidding. The coefficient of friction between the tyres of the car and the surface of the curved path is 0.2. What is the maximum speed in kmph of the car for safe driving ? [g = 10 ms^(-1) ]

AAKASH SERIES-THERMODYNAMICS-EXERCISE - 1A
  1. If C(P) and C(P) denote the specific heat (per unit mass of an ideal g...

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  2. Carnot engine is

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  3. Air pressure in the tyres of a car during motion is

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  4. Which of the following is not possible in a cyclic process ?

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  5. The relation between internal energy U, pressure P and volume V of a g...

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  6. A heat engine has an efficiency eta. Temperatures of source and sink a...

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  7. A system is taken from a given initial state to a given final state al...

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  8. A carnot has the reversible processes the following order

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  9. A triatomic, diatomic and monoatomic gas is supplied same amount of he...

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  10. A gas may expand either adiabatically or isothermally. A number of P-V...

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  11. Explain why (a) Two bodies at different temperatures T(1) and T(2) i...

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  12. Two cylinder A and B of equal capacties to each other via a stopcock. ...

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  13. In the figure below, two systems A and B are seperated by an insulatin...

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  14. Which of the following statements is correct for any thermodynamics sy...

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  15. The two gases are seperated by a fixed diathermic wall, with initial s...

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  16. What will be the nature of change in internal energy in case of preces...

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  17. For a certain mass of gas Isothermal relations between 'P' and 'V' are...

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  18. Figure shows two prpcesses A and B on a system. Let DeltaQ(1) and Delt...

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  19. The following are the P-V diagrams for cyclic process for a gas. Then ...

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  20. Referring to figure of previous question let DeltaU(1) and DeltaU(2) b...

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