The angular momentum of a planet of mass \(m,\) moving around the sun (mass: \(M\gg m\)) in an orbit of radius \(r\) is proportional to:
1. \(mr\) 2. \(\dfrac{m}{r}\)
3. \(m\sqrt r\) 4. \(\dfrac{m}{\sqrt r}\)
Subtopic:  Kepler's Laws |
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If the axis of rotation of the earth was extended into the space, then it would pass close to:
1. the moon
2. the sun
3. the pole star
4. the center of mass of all the planets in the solar system

Subtopic:  Kepler's Laws |
From NCERT
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The path of a particle moving in the earth's gravitational field (in outer space) is:
(A)  a straight line
(B)  an ellipse
(C) a parabola
(D) a hyperbola

Choose the correct statements from the ones given above:
1. (A) and (B) only
2. (A)(B) and (C) only
3. (A) , (B) and (D) only
4. (A) , (B) , (C) and (D)
Subtopic:  Kepler's Laws |
 56%
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