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Assertion : The bridges declared unsaf...

Assertion : The bridges declared unsafe after a long use.
Reason : Elastic strength of bridges losses with time

A

If both Assertion & Reason are true & the Reason is a correct explanation of the Assertion.

B

If both Assertion & Reason are true & the reason is not a correct explanation of the Assertion.

C

If Assertioin is true but the Reason is false.

D

If both Assertion and Reason are false.

Text Solution

Verified by Experts

The correct Answer is:
A
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MOTION-HYDROSTATIC, FLUID MECHANICS & VISCOSITY-EXERCISE-2 (ASSERTION AND REASON)
  1. Statement-1: Elasticity restoring forces may be conservative. State...

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  2. Assertion: Work is required to be doen to stretch a wire. This work is...

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  3. Assertion : The bridges declared unsafe after a long use. Reason ...

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  4. Statement-1: Young's modulus for a perfectly plastic body is zero St...

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  5. Assertion : Identical springs of steel and copper are equally stretc...

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  6. Assertion : Sterss is the internal force per unit area of a body. ...

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  7. Assertion: Rubber is more elastic than glass Reason: The rubber has ...

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  8. Assertion: Density of hollows body is always less than the density of ...

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  9. Assertion : Specific gravity of a fluid is a dimensionless quantity. ...

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  10. Statement I: A hydrogen-filled balloon stops rising after it has attai...

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  11. Statement-1: The size of a hydrogen increases as it rises in air. St...

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  12. Statement I: A needle placed carefully on the surface of water may flo...

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  13. Assertion: The velocity of flow of a liquid is smaller when pressure i...

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  14. Statement-1: The shape of an automobile is so designed that its front ...

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  15. Statement-1: A parachute descends slowly whereas a stone dropped from ...

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  16. Statement-1: Machine parts are jammed in winter. Statement-2: The vi...

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  17. Assertion:- For Reynolds number R(e)gt2000m, the flow of fluid is turb...

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  18. Assertion : Turbulence is always dissipative. Reason : High reynold ...

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  19. Statement-1: The angle of contact of a liquid decrease with increase i...

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  20. Assertion: A needle placed carefully on the surface of water may float...

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