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Assertion : The centre of semicircular r...

Assertion : The centre of semicircular ring of mass `m` and radius R is the origin O. The potential at origin is `-(Gm)/(R)`

Reason : The gravitational field strength is towards Y-axis.

A

If both Assertin and Reason are correct and Reason is the correct explanation of Assertion

B

If both Assertion and Reason are correct but Reason is not the correct explanation of Assertion

C

If Assertion is true but Reason is false

D

If Assertion is false but Reason is true

Text Solution

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The correct Answer is:
B
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DC PANDEY ENGLISH-GRAVITATION-(B) Chapter Exercises
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  2. Assertion : On earth's satellite, we feel weightlessness. Moon is also...

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  3. Assertion : The centre of semicircular ring of mass m and radius R is...

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  4. Assertion : If the projuct of surface area and density is same for bot...

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  5. Assertion : Areal velocity of a planet around of surface area and dens...

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  6. Assertion : Mass of the rod AB is m(1) and of particle P is m(2). Dist...

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  7. Assertion : Four point masses each of mass m are placed at points 1, 2...

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  8. Assertion : Let W(1) be the work done in taking away a satellite from ...

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  9. Assertion : Two spherical shells have masses m(1) and m(2). Their radi...

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  10. Match the following {:(,"Column-I",,"Column-II"),("(A)","Kepler's fi...

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  11. Density of a planet is two times the density of earth. Radius of this ...

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  12. On the surface of earth acceleration due gravity is g and gravitationa...

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

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  14. Two concentric spherical shells are as shown in figure. Match the foll...

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  15. Match of following columns {:(,"Column-I",,"Column-II"),("(A)",under...

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  16. A particle is projected from the surface of earth with speed v. Suppos...

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  17. In elliptical orbit of a planet, as the planet moves from apogee posit...

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  18. Match the following columns {:(,"Column-I",,"Column-II"),("(A)",unde...

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  19. If earth decreases its rotational speed. Match the following columns ...

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  20. Match the following columns. (for a satellite in circular orbit) {:(...

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