JEE PHYSICS MCQ: MAGNETISM AND MATTER

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A magnet performs 10 oscillations per minute in a horizontal plane at a place where the angle o dip is

45^\circ

and the total intensity is 0.707 units. The number of oscillations per minute at a place where dip angle is

60^\circ

and total intensity is 0.5 CGS units will be

View answer and explanation

Correct option: B

Option B (7) is correct because the number of oscillations depends on the horizontal component of the Earth's magnetic field, which is related to the total intensity and the angle of dip.

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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

{2^{5/4}}

s. One of the magnets is removed and if the other magnet oscillates in the same field , then the time period in second is The relative permeability of a substance

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

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\mu_{\mathrm{f}}

respectively, then :- Which of the following is most suitable for the core of electromagnets