A. Constant
B. not constant
C. constant if the rate of ejected gases is constant
D. constant for short range rocket.
Related Mcqs:
- What is the force of attraction between any two bodies by virtue of their masses is called?
A. Electromagnetic Force
B. Gravitational Force
C. Centripetal Force
D. Nuclear ForceSubmitted by: Nayab Idrees
- Propulsion force of a rocket is____________________?
A. non-conservative force
B. conservative force
C. both A and B
D. none of these - A ball of mass 0.2 kg is thrown vertically upwards by applying a force by hand. If the hand moves 0.2 m while applying the force and the ball goes up to 2 in height further, find the magnitude of the force. Consider g = 10m/s 2
A. 22N
B. 16N
C. 20N
D. 4NSubmitted by: Huzaifa Naseer
- The branch of Physics which deals with properties of gravitational?
A. Field theory
B. Acoustics
C. Hydro dynamic
D. Optics - The escape velocity of a body in gravitational field of earth is independent of__________________?
A. its mass
B. the angle at which it is thrown
C. both its mass and the angle at which it is thrown
D. gravitational field of earth - Gravitational P.E of a body has____________________?
A. no formula
B. a formula mgh only
C. a formula
D. no general formula - According to Einstein, the gravitational interaction is possible between_______________?
A. material objects only
B. material objects and electromagnetic radiation only
C. electromagnetic radiations
D. none of the above - By how many times are the Electrostatic forces stronger than the Gravitational Forces for a fixed distance?
A. 102
B. 1036
C. 1012
D. None of theseSubmitted by: Nayab Idrees
- Taking off rocket can be explained by __________________?
A. 1st law of motion
B. 2nd law of motion
C. Law of conservation of momentum
D. law of conservation of energy - The acceleration in the rocket at any instant is proportional to the nth power of the velocity of the expelled gases. Where the value of n must be ?
A. -1
B. 1
C. 2
D. -2
