Circular Motion Mcqs
Our collections of Multiple choice questions and answers focuses on study of Circular Motion in Physics. These questions are chosen from a collection of most authoritative and best reference books on Physics. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, MDCAT, Teaching jobs Tests and Chemical industry job interviews. One should practice our Mcqs to assimilate knowledge on Circular Motion in Physics comprehensively.
2. A body moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R the ration of displacement to the covered path will be
? R
2? R
Zero
4? R
3. A body of 2 kg is suspended form the ceiling of an elevator moving up with an acceleration g. Its apparent weight in the elevator will be
9.8 N
19.6 N
129.4 N
39.2 N
4. A cyclist cycling around a circular racing track skids because
The centripetal force upon him is less than limiting friction
The centripetal force upon him is greater then limiting friction
The centripetal force upon him is equal to the limiting friction
The friction between the tyres of the cycle and road vanishes
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5. A hoop and disc have same mass and radius. Their rotational K.E are related by an equation
K.Ehoop = K.Edisc
K.Ehoop = 2K.Edisc
K.Ehoop = 1/2K.Edisc
K.Ehoop = 4K.Edisc
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6. A man of weight W is standing on an elevator which is ascending with an acceleration a. The apparent weight of the man is
Mg
Mg - ma
Mg + ma
Mg - ma
7. A satellite moving round the earth constitutes
An inertial frome of reference
Non inertial frame
Neither inertial nor non inertial
Both inertial and non inertial
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8. A stone is whirled in a vertical circle at the end of a string. When the stone is at the highest position the tension in the string is
Maximum
Zero
Equal to the weight of the stone
Less than the weight of the stone
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9. According to Einstein the gravity interaction is possible between
Material objects only
Material objects and electromagnetic radiation only
Electromagnetic radiations
None of the above
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10. Angular speed of seconds hand of a watch in rads-1 is
?
?/2
?/30
?/180
11. Centripetal force performs
Maximum work
Minimum work
Negative work
No work
12. Geo-stationary satellite completes one rotation around earth in
3 hours
6 hours
12 hours
24 hours
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13. How many days would be in a year if the distance between the earth and the sun were reduced to half of its present value (assuming circular orbit)?
365 days
730 days
329 days
129 days
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14. If a body of mass 10 kg is allowed to fall freely, its weight becomes
Zero
89N
9.8 N
10N
15. If a car moves with a uniform speed of 2 ms-1 in a circle of radius 0.4. Its angular speed is
4 rad. S-1
5 rad. S-1
1.6 rad. S-1
2.8 ms-1
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