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An iron rod is placed parallel to magnetic field of intensity 2000 A/m. The magnetic flux through the rod is 6 × 10–4 Wb and its cross-sectional area is 3 cm2. The magnetic permeability of the rod in Wb/A–m isCorrectIncorrect
If an electron and a proton having same momenta enter perpendicularly to a magnetic field, thenCorrectIncorrect
The magnetic susceptibility of a paramagnetic material at –73 °C is 0.0075 and its value at –173 °C will beCorrectIncorrect
Electromagnets are made of soft iron because soft iron hasCorrectIncorrect
Curie temperature is the temperature above whichCorrectIncorrect
At certain place, the horizontal component of earth’s magnetic field is 3.0 G and the angle dip at the place is 30°. The magnetic field of earth at that locationCorrectIncorrect
For diamagnetic materials, magnetic susceptibility isCorrectIncorrect
Core of electromagnets are made of ferromagnetic material which hasCorrectIncorrect
A particle of charge –16 × 10–18 coulomb moving with velocity 10 ms–1 along the x-axis enters a region where a magnetic field of induction B is along the y-axis, and an electric field of magnitude 104 V/ m is along the negative z-axis. If the charged particle continues moving along the x-axis, the magnitude of B isCorrectIncorrect
At a specific instant, emission of radioactive compound is deflected in a magnetic field. The compound can emit
The emission at instant can beCorrectIncorrect