Satellites
Trending Questions
Q. What is meant by space observation? Why is it important?
Q. In uniform circular motion, the direction of velocity at any point is along the tangent to the path.
- True
- False
Q. What is meant by space observation? Why is it important?
Q. In a satellite if the time of revolution is T, then its kinetic energy is proportional to
- 1T
- 1T2
- 1T3
- T−23
Q. For a Rocket propulsion velocity of exhaust gases relative to rocket is 2 km/s. If mass of rocket system is 1000 kg, then the rate of fuel consumption for a rocket to rise up with an acceleration 4.9 m/s^2 will be:-
1) 12.25 kg/s
2) 17.5 kg/s
3) 7.35 kg/s
4) 5.2 kg/s
Q. A simple pendulum has a length of 4 m and acceleration due to gravity is taken to be 9.8 m/s2. What is the approximate value of the time period?
- 2 s
- 4 s
- 3 s
- 1 s
Q. An Earth's satellite is moving in a circular orbit with a uniform speed v. If the gravitational force of the Earth suddenly disappears, the satellite will
- vanish into outer space.
- continue to move with velocity v in original orbit.
- fly off tangentially from the orbit with velocity v.
- fall down with increasing velocity.
Q. A planet of mass m is moving in an elliptical orbit round the sun of mass M. If the maximum and minimum distances of the planet from the sun be l1 and l2, the angular momentum of the planet about the sun will be
- mGMm√(l1+l2)
- m√(l1+l2)GMl1l2
- m√2GMl1l2(l1+l2)
- 0
Q. If the universal constant of gravitation (G) were decreasing uniformly with time, then a satellite in orbit would still maintain its
- radius
- tangential speed
- angular momentum
- period of revolution
Q. Scientists predict weather and climate with the help of ___.
- meteors
- leonid showers
- artificial satellites
- asteroids
Q. ___________remains constant in uniform circular motion.
- Speed
- Acceleration
- Velocity
- Displacement
Q. Which was India's first artificial satellite launched into space?
- Sputnik
- Aryabhatta
- Bhaskara
- EDUSAT
Q. A satellite is moving in a circular orbit round the earth. If gravitational pull suddenly disappears, then it
- Continuous to move with the same speed along the same path
- Moves with the same velocity tangential to original orbit.
- Falls down with increasing velocity.
- Comes to rest after moving certain distance along original path.
Q. ___________remains constant in uniform circular motion.
- Speed
- Acceleration
- Velocity
- Displacement
Q. A wheel of radius 1 m rolls forward half a revolution on a horizontal ground. Then what will be the magnitude of the displacement of the point of the wheel initially in contact with the ground.
Q. how does the gravitational force of attraction between two masses depend on the distance between them
Q. A satellite is moving in an elliptical orbit of the Earth. Identify which of the following must be true if the satellite's speed is increasing?
- The satellite's distance from the Earth is decreasing
- The satellite's distance from the Earth is increasing
- The kinetic energy of the satellite is decreasing
- The momentum of the satellite is decreasing
- The gravitational force acting on the satellite is decreasing
Q.
On what factors does time period of a pendulum depend?
Q. A wheel of radius 1 m rolls forward half a revolution on a horizontal ground. Then what will be the magnitude of the displacement of the point of the wheel initially in contact with the ground.
Q. Rahul and Rohan are standing near a swimming pool to take a dive together. The force of gravitation between them is F. They both dive together inside the swimming pool, such that the separation between them remains the same and now the force of gravitation between them is F’. Choose the correct option.
- F’ > F
- F’ = F
- Insufficient data
- F’ < F