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Gravitation class 11 MCQ

Last updated on July 27th, 2023 at 10:14 am

Gravitation (class 11) MCQ – Set 8


36. For elliptical orbits, in the equation

R refers to

(a) radius of orbit

(b) major axis

(c) semi-minor axis

(d) semi-major axis

(d) semi-major axis

37. If the distance of the earth is halved from the sun, then the no. of days in a year will be

(a) 365

(b) 182.5

(c) 730

(d) 129

(d) 129

38. In planetary motion

(a) the angular speed remains constant

(b) the total angular momentum remains constant

(c) the linear speed remains constant

(d) neither the angular momentum nor angular speed remains constant

(b) the total angular momentum remains constant

39. Kepler’s second law regarding constancy of the areal velocity of a planet is a consequence of the law of conservation of

(a) energy

(b) angular momentum

(c) linear momentum

(d) None of these

(b) angular momentum

40. In planetary motion, the angular momentum conservation leads to the law of

(a) orbits

(b) areas

(c) periods

(d) conservation of kinetic energy

(b) areas

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