JEE PHYSICS MCQ: MAGNETISM AND MATTER

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Application +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}.

The relation between

T

and

{T_0}

View answer and explanation

Correct option: A

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

Option A (

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

) is correct because it represents the relationship between the period of oscillation with and without the magnet, considering the deflection angle.

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