The height at which the weight of a body becomes \(\left ( \frac{1}{16} \right )^\mathrm{th}\) of its weight on the surface of the earth (radius \(R\)) is:
1. \(5R\)
2. \(15R\)
3. \(3R\)
4. \(4R\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA body projected vertically from the earth reaches a height equal to earth’s radius before returning to the earth. The power exerted by the gravitational force:
1. | is greatest at the instant just before the body hits the earth. |
2. | remains constant throughout. |
3. | is greatest at the instant just after the body is projected. |
4. | is greatest at the highest position of the body. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe dependence of acceleration due to gravity 'g' on the distance 'r' from the centre of the earth, assumed to be a sphere of radius R of uniform density, is as shown in figure below:
The correct figure is:
1. a
2. b
3. c
4. d
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology