First slide
Electric field
Question

Statement I: A point charge q0 is kept outside a solid metallic sphere; the electric field inside the sphere is zero.
Statement II: Induced charge does not contribute to electric field or potential at a given point.

Easy
Solution

Electric field due to q0 is towards left and is kq0r2 but electric field due to induced charge is towards right and will have same magnitude kq0r2so that electric field inside the sphere is zero.

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