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JEE PHYSICS MCQ: MAGNETISM AND MATTER

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Application +4 | -1

If

\mathrm{B_H}=4 \times 10^{-5} \mathrm{~T}

and

\mathrm{B}_{\mathrm{V}}=2 \times 10^{-5} \mathrm{~T}

, then the Earth's total field (in

\mathrm{T}

) at the place is

View answer and explanation

Correct option: B

2 \sqrt{5} \times 10^{-5} \mathrm{~T}

Option B (

2 \sqrt{5} \times 10^{-5} \mathrm{~T}

) is correct because the total magnetic field is the vector sum of the horizontal and vertical components.

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Curie temperature is the one above which A vibration magnetometer consists of two identical bar magnets placed one over the other such that they are perpendicular and bisect each other. The time period of oscillation in a horizontal magnetic field is

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\mu_{\mathrm{d}}, \mu_{\mathrm{p}}

\mu_{\mathrm{f}}

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