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Which one of the following is NOT used t...

Which one of the following is NOT used to reduce friction ?

A

Oil

B

Ball bearings

C

Sand

D

Graphite

Text Solution

Verified by Experts

The correct Answer is:
C
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TARGET PUBLICATION-FRICTION IS SOLIDS AND LIQUIDS -MCQ (COMPETITIVE THINKING)
  1. Which one of the following is NOT used to reduce friction ?

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  2. STATEMENT-1: It is easier to pull a heavy object than to push it on a ...

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  3. If a ladder weighting 250 N is placed against a smooth vertical wall h...

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  4. The coefficient of static friction, mu(s) between block A of mass 2 k...

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  5. A lift is moving down with an acceleration equal to the acceleration d...

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  6. Maximum acceleration of the train in which a 50 kg box lying on its fl...

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  7. A block B is pushed momentarily along a horizontal surface with an ini...

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  8. A block rests on a rough inclined plane making an angle of 30^@ with t...

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  9. A wooden box of mass 8kg slides down an inclined plane of inclination ...

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  10. A wooden box lying at rest on an inclined surface of a wet wood is hel...

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  11. What is the maximum value of the force F such that the block shown in ...

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  12. A system consists of three masses m(1),m(2) " and " m(3) connected by ...

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  13. Maximum value of static friction is .

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  14. Which of the following statements is incorrect ?

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  15. A body of mass M is kept n a rough horizontal surfasce (friction coeff...

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  16. Consider a frictionless ramp on which a smooth object is made to side ...

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  17. Block B lying on a table weighs w. The coefficient of static friction ...

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  18. A heavy uniform chain lies on a horizontal table-top. If the coefficie...

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  19. A block A with mass 100kg is resting on another block B of mass 200kg....

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  20. A block of mass 2kg is kept on the floor. The coefficient of static fr...

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