Physics
Assertion (A) : A brick exerts maximum pressure on ground when it is placed with its longest side vertical.
Reason (R) : Larger the area on which a given thrust acts, lesser is the pressure exerted by it.
- both A and R are true and R is the correct explanation of A
- both A and R are true and R is not the correct explanation of A
- assertion is false but reason is true
- assertion is true but reason is false
Fluids Pressure
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Answer
both A and R are true and R is the correct explanation of A
Explanation
Assertion (A) is true because when the brick is placed with its longest side vertical, the contact area with the ground is minimum, and for a given weight (thrust), smaller area means higher pressure as
Reason (R) is true because this is a direct consequence of the formula above — pressure is inversely proportional to area for a constant force, since the Reason clearly explains why the pressure is maximum when area is minimum (i.e., brick standing vertically), it is the correct explanation.
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