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Assertion : We can not move even a finge...

Assertion : We can not move even a finger without disturbing all the stars.
Reason : Everybody in this universe attracts every other body with a force which is inversely proportional to the square of distance between them.

A

Both Assertion and Reason are true and Reason is the correct explanation of Assertion

B

Both Assertion and Reason are true and Reason is not the correct explanation of Assertion

C

Assertion is true and Reason is false

D

Assertion is false and Reason is true

Text Solution

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The correct Answer is:
A
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Explore conceptually related problems

Assertion (A) A particle of mass m dropped into a hole made along the daimeter of the earth from onr end to the other and passess simple harmonic motion . Reason (R) Gravitational force between any two particle is inversely proportianal to the sqaure o fthe distance between them .

The root mean square speed of an ideal gas is given by : u_("rms") = sqrt((3RT)/M) Thus we conclude that u_("rms") speed of the ideal gas molecules is proportional to square root of the temperature and inversely proportional to the square root of the molar mass. The translational kinetic energy per mole can also be given as 1/2Mu_(rms)^(2) . The mean free path ( lambda ) is the average of distances travelled by molecules in between two successive collisions whereas collision frequency (C.F.) is expressed as number of collisions taking place in unit time. The two terms lambda and C.F. are related by : C.F = (u_("rms")/lambda) Which of the following relation is correct for an ideal gas regarding its pressure (P) and translational kinetic energy per unit volume (E) ?

The root mean square speed of an ideal gas is given by : u_("rms") = sqrt((3RT)/M) Thus we conclude that u_("rms") speed of the ideal gas molecules is proportional to square root of the temperature and inversely proportional to the square root of the molar mass. The translational kinetic energy per mole can also be given as 1/2Mu_(rms)^(2) . The mean free path ( lambda ) is the average of distances travelled by molecules in between two successive collisions whereas collision frequency (C.F.) is expressed as number of collisions taking place in unit time. The two terms lambda and C.F. are related by : C.F = (u_("rms")/lambda) If n represents number of moles, n0 is number of molecules per unit volume, k is Boltzmann constant, R is molar gas constant, T is absolute temperature and NA is Avogadro's number then which of the following relations is wrong ?

AAKASH SERIES-GRAVITATION-Exercise-I
  1. Let V and E be the gravitational potential and gravitational field at ...

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  2. Let V and E represent the gravitational potential and field at a dista...

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  3. Take the effect of bulging of earth and its rotation is account . Cons...

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  4. Let V and E denote the gravitational potential and gravitational field...

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  5. Inside a uniform spherical shell (a)the gravitational potential is z...

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  6. Consider a planet moving in an elliptical orbit round the sun. The wor...

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  7. A double star is a system of two stars rotating about their centre of ...

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  8. Assertion: For the planets orbiting around the sun, angular speed, lin...

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  9. Assertion : A body is first taken along a smooth inclined plane throug...

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  10. Assertion: Two point masses freely positioned at rest move under mutua...

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  11. Assertion: The universal gravitational constant is same as acceleratio...

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  12. Assertion: The bodies in the satellites revolving round the earth are ...

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  13. Assertion : There is no atmosphere on the moon surface. Reason : RMS...

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  14. Assertion: Even when orbit of a satellite is elliptical , its plane of...

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  15. Assertion : The time period of revolution of a statellite close to sur...

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  16. Assertion : Space rockets are usually launched in the equatorial line ...

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  17. Assertion : Escape velocity from the surface of black hole is greater ...

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  18. Assertion : When a body is projected from the surface of the earth wit...

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  19. Assertion : A planet moves faster , when it is closer to the sun in i...

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  20. Assertion : We can not move even a finger without disturbing all the s...

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