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Friday, 9 October

JEE Main 2026 · PhysicsNumerical answerNumerical valueMediumMulti-step

JEE Main 4 April 2026, Shift 2, Physics Q48

Question 48 of 75 in this shift, Physics question 23 of 25, Section B.

Two identical small bar magnets each of dipole moment 353\sqrt5 J/T are placed at a center to center separation of 10 cm, with their axes perpendicular to each other as shown in figure. The value of magnetic field at the point PP midway between the magnets is α×10−3\alpha\times10^{-3} T. The value of α\alpha is ________. (μ0=4π×10−7\mu_0=4\pi\times10^{-7} Tm/A)

The figure, in words

Two bar magnets 10 cm apart (centre to centre), P midway on the dashed line joining them. Left magnet lies horizontally (S on the left, N on the right, along the line); right magnet stands vertically (S at top, N at bottom), perpendicular to the line.

Official answer

12

NTA final key.

Chapter
Magnetism and Matter
Topic
Magnetic Dipole Moment
Idea tested
Magnetic Field of a Short Dipole

Same idea in other shifts

Asked 2× in all
  1. 29 Jan 2024, Shift 1 · Q57The magnetic potential due to a magnetic dipole at a point on its axis situated at a distance of 20 cm from its center is…EasyNumerical value

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. This question needs a figure we do not reproduce; it is described in words above. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.