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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
- Three solids of masses m₁,m₂ and m₃ are connected with weightless string
- In Young’s double slit experiment, the ratio of maximum and minimum intensities
- In a diffraction pattern due to a singleslit of width a, the first minimum is observed
- The horizontal range and maximum height attained by a projectile are R and H,respectively
- If the feedback voltage is increased in a negative feedback amplifier, then
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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