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A satellite is revolving around the earth with a kinetic energy E. The minimum addition of kinetic energy needed to make it escape from its orbit is
Options
(a) 2E
(b) 2/E
(c) E/2
(d) E
Correct Answer:
E
Explanation:
The potential energy of a satellite is negative and twice its kinetic energy. If it has to escape, it has to be given an additional energy to nullify the energy due to attraction.
E is the energy to be given so that the satellite can escape.
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Topics: Gravitation
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The radius of gyration of a solid sphere of radius r about a certain axis is r
- The resistance of an ammeter is 13Ω and its scale is graduated for a current
- Three capacitors of capacitances 3 μF, 10 μF and 15 μF are connected in series
- In a given process on an ideal gas, dW=0 and dQ<0. Then for the gas
- As a light wave travels from one medium to another which of its following properties
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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