IIT JEE Questions And Answers :: Laws Of Motion: part1



IIT JEE : Laws Of Motion QUESTIONS AND ANSWERS :: part1 : 21 to 25

Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :

21.A body weighs 8 g when placed in one pan and 18 g when placed on the other pan of a false balance. If the beam is horizontal when both the pans are empty, the true weight of the body is:

13 g
12 g
15.5 g
15 g

22.A block rests on a rough inclined plane making an angle of 30 degree with the horizontal. The coefficient of static friction between he block and the plane is 0.8. If the frictional force on the block is 10N, the mass of the block in (kg) is: (Take g = 10 m/second square)

2.0
4.0
1.6
2.5

23.Two bodies have same mass and speed, then:

their momentums are same
the ratio of momentums is not determined
the ratio of their magnitudes of momentum is one
both B and C are correct

24.The ratio of the weight of a man in a stationary lift and when it is moving downwards with uniform acceleration a is 3:2 then the value of a is:

3/2 g
g/3
g
2/3 g

25.A block of mass M is suspended by a string A from the ceiling and another string B is connected to the bottom of the block. If B is pulled on steadily:

A breaks earlier than B
B breaks earlier than A
both break simultaneously
not possible to say which one will break earlier

More Laws Of Motion QUESTIONS AND ANSWERS available in next pages

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