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Assertion : When a bicycle is in motio...

Assertion : When a bicycle is in motion, the force of friction exerted by the ground on the two wheels is always in forward direction. Reason : The frictional force acts only when the bodies are in contact

A

Assertion is True, Reason is True, Reason is a correct explanation for Assertion

B

Assertion is True, Reason is True, Reaosn is not a correct explanation for Assertion

C

Assertion is True, Reason is False

D

Assertion is False, Reason is False.

Text Solution

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The correct Answer is:
D
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TARGET PUBLICATION-FRICTION IS SOLIDS AND LIQUIDS -MCQ (CRITICAL THINKING)
  1. When a moving body is suddenly stopped

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  2. The ball bearings used in a machine are of different materials, this i...

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  3. Assertion : When a bicycle is in motion, the force of friction exert...

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  4. A block of mas M is resting on an inclined plane as shown in the figur...

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  5. A block of mass m=2kg is resting on a rough inclined plane of inclinat...

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  6. If F(i) and F(g) are the frictional force between surface of contact f...

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  7. A 4 kg block A is placed on the top of 8 kg block B which rests on a s...

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  8. Wooden block of weight W(1) is kept on a horizontal surface. A pan is ...

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  9. A rough vertical board has an acceleration a so that a 2 kg block pres...

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  10. A block of mass m lying on a rough horizontal plance is acted upon by ...

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  11. A block of mass 10kg is placed on a rough horizontal surface having co...

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  12. The pressure at a point in a fluid is independent of "".

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  13. Assertion : To empty an oil tank, two holes are made. Reason : Oi...

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  14. Two vessels have different base area. They are filled with water to th...

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  15. The manual of a car instructs the owner to inflate the tyers to a pres...

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  16. What is the pressure on a swimmer 10m below the surface of lake? g=10m...

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  17. In car lift compressed air exerts a force F1 on a small piston having ...

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  18. The densities vary very little over a wide range I pressure and temper...

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  19. Two pistons (areas A(1) and A(2)) exerting forces F(1) and F(2) on a l...

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  20. hydraulic breakes work on priciple of

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