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Assertion:- A ball allowed to spin in a ...

Assertion:- A ball allowed to spin in a region of uniform wind motion, will get an uplift.
Reason:- Due to spin of the ball in a region of uniform wind motion, the difference in velocity of air flow is present between the lower and upper position of ball, leading to varying pressure.

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

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

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

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

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

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

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

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  17. Statement-1: Roofs of buildings are blown off during a strong storm. ...

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

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

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

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