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Assertion : When a body acquires negativ...

Assertion : When a body acquires negative charge, its mass decreases.
Reason : A body acquires negative charge when it loses electrons.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Text Solution

AI Generated Solution

The correct Answer is:
To analyze the given assertion and reason, we will break down the concepts involved step by step. ### Step 1: Understanding the Assertion The assertion states: "When a body acquires negative charge, its mass decreases." - A body acquires a negative charge by gaining electrons. Electrons have a mass of approximately \(9.1 \times 10^{-31}\) kg and a charge of \(-1.6 \times 10^{-19}\) C. - If a body gains electrons, it is gaining mass because electrons are being added to the body. ### Step 2: Understanding the Reason The reason states: "A body acquires negative charge when it loses electrons." - This statement is incorrect. A body acquires a negative charge when it gains electrons, not loses them. - If a body loses electrons, it becomes positively charged because the number of protons (positive charges) exceeds the number of electrons (negative charges). ### Step 3: Analyzing the Relationship - Since the assertion is that a body loses mass when it acquires a negative charge, and we established that gaining electrons (which are negative) actually increases the mass, the assertion is false. - The reason is also false because it incorrectly states that a body acquires a negative charge by losing electrons. ### Step 4: Conclusion Both the assertion and the reason are false. Therefore, the correct conclusion is that neither statement is true. ### Final Answer Both the assertion and the reason are false. ---
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