Verified Solution • 2025–26 Session moderate

QJEEM25Ph694f: JEE Main 2025 Physics - Class 11 JEEM25Ph694f Solution: Match List - I with List - II .tg…

Match List - I with List - II

List - I List - II
(A) Permeability of free space (I) [ML2 T−2]\left[\mathrm{M} \mathrm{L}^2 \mathrm{~T}^{-2}\right]
(B) Magnetic field (II) [MT−2 A−1]\left[\mathrm{M} \mathrm{T}^{-2} \mathrm{~A}^{-1}\right]
(C) Magnetic moment (III) [MLT−2 A−2]\left[\mathrm{M} \mathrm{L} \mathrm{T}^{-2} \mathrm{~A}^{-2}\right]
(D) Torsional constant (IV) [L2 A]\left[\mathrm{L}^2 \mathrm{~A}\right]

Choose the correct answer from the options given below :

Multiple Choice Options

  • A (A)-(III), (B)-(II), (C)-(IV), (D)-(I)
  • B (A)−(I),(B)−(IV),(C)−(II),(D)−(III)(\mathrm{A})-(\mathrm{I}),(\mathrm{B})-(\mathrm{IV}),(\mathrm{C})-(\mathrm{II}),(\mathrm{D})-(\mathrm{III})
  • C (A)−(II),(B)−(I),(C)−(III),(D)−(IV)(\mathrm{A})-(\mathrm{II}),(\mathrm{B})-(\mathrm{I}),(\mathrm{C})-(\mathrm{III}),(\mathrm{D})-(\mathrm{IV})
  • D (A)-(IV), (B)-(III), (C)-(I), (D)-(II)

Step-by-Step Verified Solution

The correct matching is:

(A) Permeability of free space has dimensions

[MLT−2A−2]

which corresponds to entry (III).

(B) Magnetic field has dimensions

[MT−2A−1]

which corresponds to entry (II).

(C) Magnetic moment in SI units is expressed in Ampere-square meters, i.e.,

[L2A]

which corresponds to entry (IV).

(D) Torsional constant (torque per unit angular displacement) has dimensions

[ML2T−2]

which corresponds to entry (I).

Thus, the correct answer is:

Option A: (A)-(III), (B)-(II), (C)-(IV), (D)-(I)

Related Learning Resources & Exam Preparation

JEE Main PYQ Question Bank
Browse year-wise authentic previous years' questions with solutions
Authentic CBT Mock Tests
Simulate official exam environment with live timer and percentile scoring