MHT CET Physics question

A comet is moving around the earth in highly elliptical orbit. Identify the incorrect statement

(A)Its K.E. and P.E. both change over the orbit
(B)Its T.E. changes over the orbitCorrect
(C)Its linear momentum changes in magnitude as well as in direction over the orbit
(D)Its angular momentum remains constant over the orbit

Answer: (B)

Solution

Total energy of the comet is conserved under the gravitational force, so statement (b) is incorrect, while K.E. and P.E. do change (a), the speed and

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Question ID VK-060106