CUET · PHYSICS · PYQ PAPER 2023
The oscillation period of a freely suspended magnetic needle does NOT depend upon :
- A dimensions and mass of needle
- B dipole moment of needle
- C horizontal component of Earth's field
- D length of suspension fibre
Answer & Solution
Correct Answer
(D) length of suspension fibre
Step-by-step Solution
Detailed explanation
The time period \(T=2 \pi \sqrt{I I M B_h}\) depends only on the needle's moment of inertia, magnetic moment, and the Earth's horizontal magnetic field. The length of the suspension fibre is not part of this governing equation, making the period independent of it. D) length of…
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