Question

assertion(A): A boy gets completely exhausted in trying to push a stationary wall.

Reason(R): Work done by the boy on the wall is zero

a) both A and B are true and R is the correct explanation of A.


b) both A and R are true but R is not the correct explanation of A.


c) A is true but R is false.


d)A is false but R is true​

Answer 1

Answer:

Here's your answer

Explanation:

A is true but R is false

Answer 2

The correct option is b) Both A and R are true, but R is not the correct explanation of A.

The explanation for the above correct option,

• Statement A is true because a boy cannot move a stationary wall by pushing it, and will eventually get exhausted due to the physical effort.
• However, statement R is not the correct explanation of statement A.
• The work done by the boy on the wall may indeed be zero, as the wall does not move and displacement is zero. However, the reason for the boy's exhaustion is not related to the work done.
• The boy is exhausted due to the physical effort required to push the wall, even though the wall does not move.
• Therefore, both statements are true but they are not causally related, and hence statement R is not the correct explanation of statement A.

The reason why others are wrong,

• Statement A states that a boy gets completely exhausted in trying to push a stationary wall. This is true because pushing a stationary wall requires a great amount of physical effort and the wall does not move despite the boy's effort, leading to exhaustion.

• Statement R states that the work done by the boy on the wall is zero. This is also true because work is defined as force multiplied by displacement, and in this case, since the wall does not move, the displacement is zero and hence the work done by the boy is also zero.
• However, statement R is not the correct explanation of statement A. The reason for the boy's exhaustion is not related to the work done, but rather to the physical effort required to push the wall. The boy's muscles are working hard against the wall, but the wall does not move, leading to fatigue and exhaustion. Therefore, both statements are true, but statement R is not the correct explanation of statement A.

For further reference,

https://brainly.in/question/26747068?referrer=searchResults

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