Assertion: Two concentric charged shells are given. The potential difference between the shells depends on charge of inner shell.
Reason: Potential due to charge of outer shell remains same at every point inside the sphere.

Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion

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Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion

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Assertion is true statement but Reason is false

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Both Assertion and Reason are false statements

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Solution

The correct option is A Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
For a shell of radius R with charge Q, potential on the surface or any point inside is given by $V_{1} = \frac{k Q_{1}}{R_{1}}$ , $V_{2} = \frac{k Q_{2}}{R_{2}}$
Potential at inner shell is gievn by $V_{i} = \frac{k Q_{1}}{R_{1}} + \frac{k Q_{2}}{R_{2}}$
potential at outer shell $V_{o} = \frac{k Q_{1}}{R_{2}} + \frac{k Q_{2}}{R_{2}}$
poterntial difference $V_{o} - V_{i} = \frac{k Q_{1}}{R_{1}} - \frac{k Q_{1}}{R_{2}}$
therefore Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

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1. Both assertion and reason are true and the reason is the correct explanation of the assertion

2. Both assertion and reason are true but reason is not correct explanation of the assertion

3. Assertion is true statement but reason is false

4. Both assertion and reason are false statements

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