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If r be the distance of a point on the axis of a magnetic dipole from its centre then the magnetic field at such a point is proportional to
Options
(a) 1/r
(b) 1/r²
(c) 1/r³
(d) none of these
Correct Answer:
1/r³
Explanation:
As we know that, the magnetic field at a point due to the dipole is given by B = (μ₀ / 4π) × (M / r³) × √(1 + 3 cos² θ) where, M is magnetic dipole moment. Then, B ∝ 1 / r³
Related Questions: - A tuning fork frequency 512 Hz is vibrated with a sonometer wire and 6 beats per second
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Topics: Magnetic Effects of Current and Magnetism
(167)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A tuning fork frequency 512 Hz is vibrated with a sonometer wire and 6 beats per second
- Two coils have the mutual inductance of 0.05 H.
- If seperation between screen and source is increased by 2%. What would be the effect
- Which of the following phenomenon exhibited the particle nature of light?
- If the minimum energy of photons needed to produce photoelectrons is 3 eV,
Topics: Magnetic Effects of Current and Magnetism (167)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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