Q6 of 38 Page 57

In our solar system, the inter - planetary region has chunks of matter (much smaller in size compared to planets) called asteroids. They

Like any other planet, asteroids also follow Kepler’s law and move in elliptical orbits around planet due to the central gravitational force acting on them.


small mass of asteroid does not escape the gravitational force due to sun because of large mass of sun and hence, (a) is incorrect. Since gravitational force follow inverse square law, the asteroid will move in circular or elliptical orbits and (b) is incorrect option

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Satellites orbiting the earth have finite life and sometimes debris of satellites fall to the earth. This is because,

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Both earth and moon are subject to the gravitational force of the sun. As observed from the sun, the orbit of the moon

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Choose the wrong option.

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Particles of masses 2M, m and M are respectively at points A, B and C with AB = 1/2 (BC). m is much - much smaller than M and at time t = 0, they are all at rest (Fig. 8.1). At subsequent times before any collision takes place: