CUET · PHYSICS · PYQ PAPER 2025
Identify the correct statements among the following.
(A) Inside a conductor, electrostatic field is non-zero
(B) Electrostatic potential is constant throughout the volume of the conductor and has the same value (as inside) on its surface
(C) In a conductor with a cavity, with no charges inside the cavity, the electric field inside the cavity is non-zero, whatever be the size and shape of the cavity
(D) At the surface of a charged conductor, electrostatic field must be normal to the surface at every point.
Choose correct answer from the options given below:
- A (A), (B) and (C) only
- B (A), (B) and (D) only
- C (B) and (D) only
- D (B), (C) and (D) only
Answer & Solution
Correct Answer
(C) (B) and (D) only
Step-by-step Solution
Detailed explanation
(B) Correct: Since the electric field \(E=0\) inside, no work is done in moving a charge; therefore, the electrostatic potential remains constant throughout the volume and surface. (D) Correct: The electrostatic field must be normal (perpendicular) to the surface at every point;…
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