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A: The railway bridges are declared unfi...

A: The railway bridges are declared unfit after their use for a long period.
R: Due to repeated strain the elasticity of material decreases.

A

Statement-1, is true, Statement-2 is true, Statement-2 is correct explanation for statement-1

B

Statement-1 is true, statement-2 is true, statement-2 is NOT a correct explantion for statement-1

C

statement-1 is true, statement-2 is false

D

statement-1 is false statement-2 is true

Text Solution

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The correct Answer is:
A
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ALLEN-ELASTICITY, SURFACE TENSION AND FLUID MECHANICS-Exercise 3 (Assertion & Reason)
  1. Assertion:- A ball allowed to spin in a region of uniform wind motion,...

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  2. Statement-1: Elasticity restoring forces may be conservative. State...

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  3. A: The railway bridges are declared unfit after their use for a long p...

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  4. A: Bulk modulus for a perfectly plastic body is zero. R: For perfect ...

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  5. Assertion : identical springs of steel and copper are equally stretche...

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

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

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  8. Assertion : Machine parts are jammed in winter . Reason : The vico...

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  9. Assertion :The angle of contact of a fluid with a solid increases with...

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  10. Statement-1: In gravity free space, the liqid in a capillary tube will...

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  11. Statement-1: It is better to wash the clothes in cold soap solution. ...

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  12. Statement-1: A gas filled balloon stops rising after it has attained a...

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

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  14. Statement-1: hot soup tastes better than the cold soup. Statement-2:...

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  15. Roofs of the huts are blown up during stormy days. Why?

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  16. Statement-1: The stream of water emerging from a wate tap "necks down"...

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  17. Statement-1: As wind flows left to right and a ball is spined as shown...

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  18. Statement-1: A block is immersed in a liquid inside a beaker which is ...

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  19. Statement-1: An ice cube is floating in water in a vessel at 0^(@)C wh...

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  20. Statement-1: Leaves and small insects float on the surface of water bu...

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