363583
A man is standing at a spring platform. Reading of spring balance is 60 \(kg\) \(wt\). If man jumps outside platform, then reading of spring balance
1 First increases then decreases to zero
2 Decreases
3 Increases
4 Remains same
Explanation:
For jumping he presses the spring platform, so the reading of spring balance increases first and finally it becomes zero.
PHXI05:LAWS OF MOTION
363585
Assertion : A rocket moves forward by pushing the surrounding air backwards. Reason : It derives the necessary thrust to move forward according to Newton's third law of motion.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Rocket is a system of varying men a rocket does move forward by pushing the surrounding air (or expelled gases) backwards, deriving the necessary thrust to move forward according to Newton's third law of motion. This is the principle behind how rockets work. So correct option is (1)
PHXI05:LAWS OF MOTION
363586
Which of the following is not an illustration of Newton’s third law?
1 A cricket player lowering his hands while catching a cricket ball
2 Flight of a jet plane
3 Rebounding of a rubber ball
4 Walking on floor
Explanation:
A cricket player lower his hands while catching a ball to increase the time so as to decrease the force exerted by the ball on cricketer’s hands. This is not an example of Newton’s third law of motion.
PHXI05:LAWS OF MOTION
363587
In a rocket of mass 1000 \(kg\) fuel is consumed at a rate of 40 \(kg\)/\(s\). The velocity of the gases ejected from the rocket is \(5 \times {10^4}m/s.\) The thrust on the rocket is
363583
A man is standing at a spring platform. Reading of spring balance is 60 \(kg\) \(wt\). If man jumps outside platform, then reading of spring balance
1 First increases then decreases to zero
2 Decreases
3 Increases
4 Remains same
Explanation:
For jumping he presses the spring platform, so the reading of spring balance increases first and finally it becomes zero.
PHXI05:LAWS OF MOTION
363585
Assertion : A rocket moves forward by pushing the surrounding air backwards. Reason : It derives the necessary thrust to move forward according to Newton's third law of motion.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Rocket is a system of varying men a rocket does move forward by pushing the surrounding air (or expelled gases) backwards, deriving the necessary thrust to move forward according to Newton's third law of motion. This is the principle behind how rockets work. So correct option is (1)
PHXI05:LAWS OF MOTION
363586
Which of the following is not an illustration of Newton’s third law?
1 A cricket player lowering his hands while catching a cricket ball
2 Flight of a jet plane
3 Rebounding of a rubber ball
4 Walking on floor
Explanation:
A cricket player lower his hands while catching a ball to increase the time so as to decrease the force exerted by the ball on cricketer’s hands. This is not an example of Newton’s third law of motion.
PHXI05:LAWS OF MOTION
363587
In a rocket of mass 1000 \(kg\) fuel is consumed at a rate of 40 \(kg\)/\(s\). The velocity of the gases ejected from the rocket is \(5 \times {10^4}m/s.\) The thrust on the rocket is
363583
A man is standing at a spring platform. Reading of spring balance is 60 \(kg\) \(wt\). If man jumps outside platform, then reading of spring balance
1 First increases then decreases to zero
2 Decreases
3 Increases
4 Remains same
Explanation:
For jumping he presses the spring platform, so the reading of spring balance increases first and finally it becomes zero.
PHXI05:LAWS OF MOTION
363585
Assertion : A rocket moves forward by pushing the surrounding air backwards. Reason : It derives the necessary thrust to move forward according to Newton's third law of motion.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Rocket is a system of varying men a rocket does move forward by pushing the surrounding air (or expelled gases) backwards, deriving the necessary thrust to move forward according to Newton's third law of motion. This is the principle behind how rockets work. So correct option is (1)
PHXI05:LAWS OF MOTION
363586
Which of the following is not an illustration of Newton’s third law?
1 A cricket player lowering his hands while catching a cricket ball
2 Flight of a jet plane
3 Rebounding of a rubber ball
4 Walking on floor
Explanation:
A cricket player lower his hands while catching a ball to increase the time so as to decrease the force exerted by the ball on cricketer’s hands. This is not an example of Newton’s third law of motion.
PHXI05:LAWS OF MOTION
363587
In a rocket of mass 1000 \(kg\) fuel is consumed at a rate of 40 \(kg\)/\(s\). The velocity of the gases ejected from the rocket is \(5 \times {10^4}m/s.\) The thrust on the rocket is
363583
A man is standing at a spring platform. Reading of spring balance is 60 \(kg\) \(wt\). If man jumps outside platform, then reading of spring balance
1 First increases then decreases to zero
2 Decreases
3 Increases
4 Remains same
Explanation:
For jumping he presses the spring platform, so the reading of spring balance increases first and finally it becomes zero.
PHXI05:LAWS OF MOTION
363585
Assertion : A rocket moves forward by pushing the surrounding air backwards. Reason : It derives the necessary thrust to move forward according to Newton's third law of motion.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Rocket is a system of varying men a rocket does move forward by pushing the surrounding air (or expelled gases) backwards, deriving the necessary thrust to move forward according to Newton's third law of motion. This is the principle behind how rockets work. So correct option is (1)
PHXI05:LAWS OF MOTION
363586
Which of the following is not an illustration of Newton’s third law?
1 A cricket player lowering his hands while catching a cricket ball
2 Flight of a jet plane
3 Rebounding of a rubber ball
4 Walking on floor
Explanation:
A cricket player lower his hands while catching a ball to increase the time so as to decrease the force exerted by the ball on cricketer’s hands. This is not an example of Newton’s third law of motion.
PHXI05:LAWS OF MOTION
363587
In a rocket of mass 1000 \(kg\) fuel is consumed at a rate of 40 \(kg\)/\(s\). The velocity of the gases ejected from the rocket is \(5 \times {10^4}m/s.\) The thrust on the rocket is
