- 1(current)
Q. No.A satellite is in a circular orbit around a planet, orbiting with a speed of \(2\) km/s. What is the minimum additional velocity that should be given to it, perpendicular to its motion, so that it escapes?
| 1. | \(2\) km/s | 2. | \(2\sqrt2\) km/s |
| 3. | \(2(\sqrt2-1)\) km/s | 4. | \(2(\sqrt2+1)\) km/s |
Subtopic: Â Escape velocity |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Assume Newton's theory of gravitation to hold true for the following. What should be the mass of a uniform sphere of radius \(R\) so that the escape velocity from its surface equals \(c,\) the velocity of light in vacuum?
1. \(\frac{Rc^2}{G}\)
2. \(\frac{Rc^2}{2G}\)
3. \(\frac{2Rc^2}{G}\)
4. \(\sqrt2\frac{Rc^2}{G}\)
1. \(\frac{Rc^2}{G}\)
2. \(\frac{Rc^2}{2G}\)
3. \(\frac{2Rc^2}{G}\)
4. \(\sqrt2\frac{Rc^2}{G}\)
Subtopic: Â Escape velocity |
 82%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The escape velocity of a body on the earth's surface is \(11.2\) km/s. If the same body is projected upward with a velocity \(22.4\) km/s, the velocity of this body at infinite distance from the center of the earth will be:
1. \(11.2\sqrt2\) km/s
2. zero
3. \(11.2\) km/s
4. \(11.2\sqrt3\) km/s
1. \(11.2\sqrt2\) km/s
2. zero
3. \(11.2\) km/s
4. \(11.2\sqrt3\) km/s
Subtopic: Â Escape velocity |
From NCERT
NEET - 2023
Please attempt this question first.
Hints
Please attempt this question first.
- 1(current)
Q. No.
© 2024 GoodEd Technologies Pvt. Ltd.