JEE PHYSICS MCQ: MAGNETISM AND MATTER

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Analyzing +4 | -1

A deflection magnetometer is adjusted in the usual way. When a magnet is introduced, the deflection observed is

\mathrm{\theta }

, and the period of oscillation of the needle in the magnetometer is

T

. When the magnet is removed, the period of oscillation is

{T_0}

.Find the relation between

T\;\mathrm{and}\;{T_0}

View answer and explanation

Correct option: A

{T^2} = T_0^2\;\mathrm{cos\;\theta }

Option A (

{T^2} = T_0^2\;\mathrm{cos\\;\theta }

) is correct because it relates the period of oscillation with and without the magnet based on the deflection angle.

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