The gravitational intensity at the centre of a hemispherical shell of uniform mass density has the direction indicated by the arrow:
1. a, d
2. b, d
3. c, e
4. d, e
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA rocket is fired from the earth towards the sun. At what distance from the earth’s centre is the gravitational force on the rocket zero?
Given, the mass of the sun = kg, the mass of the earth = kg, and orbital radius = m. Neglect the effect of other planets etc.
1. 2.59 × 108 m
2. 3.10 × 108 m
3. 4.07 × 108 m
4. 2.23 × 108 m
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology