| 1 |
Before the launch of a rocket the mass of fuel of the rocket is approximately consists of. |
- A. 60%
- B. 50%
- C. 80%
- D. 100%
|
| 2 |
Height of projectile is maximum at an angle of. |
- A. 45<sup>o</sup>
- B. 60<sup>o</sup>
- C. 30<sup>o</sup>
- D. 90<sup>o</sup>
|
| 3 |
A force applied on a body produces acceleration in |
- A. Opposite direction
- B. perpendicular direction
- C. Its own direction
- D. In any direction
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| 4 |
The acceleration of a projectile along x axis is. |
- A. Zero
- B. Increase
- C. Decrease
- D. Equal to 'g'
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| 5 |
No body begins to move or comes to rest of itself was given by |
- A. Newton
- B. Pascal
- C. Bernoulli
- D. Bu Ali Sina
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| 6 |
Change of momentum is equal to |
- A. Force
- B. Tension
- C. Impulse
- D. Pressure
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| 7 |
An object of mass 1 kg moving with acceleration 0 1 ms-2 will experience a force of. |
- A. 10<sup>-2</sup> N
- B. 10<sup>-3</sup> N
- C. 1 N
- D. 1 dyne
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| 8 |
For a rocket , the change in momentum per second of the ejecting gases is equal. |
- A. Acceleration of the rocket
- B. Momentum of rocket
- C. Velocity of rocket
- D. Thrust acting on rocket
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| 9 |
A frame of reference stationed at the earth is an |
- A. Inertial frame
- B. None internal frame
- C. Accelerated frame
- D. Laboratory frame
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| 10 |
Average acceleration is a |
- A. Scalar quantity
- B. Vector quantity
- C. <div>(-) ve quantity</div>
- D. None of these
|