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The field strength of uniform solid sphere decreases linearly with 'r' and becomes zero at the center. Which graph correctly depicts this?

1. Graph A
2. Graph B
3. Graph C
4. Graph D

Correct answer: Graph B

Solution

The field strength inside a uniform solid sphere decreases linearly with distance 'r' from the center and becomes zero at the center. This is due to the proportionality of the field to 'r' inside the sphere.

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