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JEE Main20198 Apr 2019Morning ShiftPhysicsUnits and DimensionsActual

In S I units, the dimensions of ϵ 0 μ 0 is:

Options

  1. AA T 2 M - 1 L - 1
  2. BA 2 T 3 M - 1 L - 2
  3. CA - 1 T M L 3
  4. DA T - 3 M L 3 / 2

Correct answer

B. A 2 T 3 M - 1 L - 2

Step-by-step solution

As we know, c = 1 μ 0 ε 0 ∴   ε 0 μ 0 = ε 0 2 μ 0 ε 0 = ε 0 c ∴ ε 0 μ 0 = ε 0 c = M - 1 L - 3 T 4 A 2 [ L T - 1 ] = [ M - 1 L - 2 T 3 A 2 ]

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