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The dimensions of (μ₀ε₀)⁻¹/² are:

1. [L⁻¹/²T⁻¹/²]
2. [L⁻¹T⁻¹]
3. [L⁻¹]
4. [L⁻¹/²T⁻¹/²]

Correct answer: [L⁻¹T⁻¹]

Solution

The term (μ₀ε₀)⁻¹/² represents the speed of light in a vacuum, which has dimensions of [LT⁻¹]. Therefore, its inverse has dimensions [L⁻¹T⁻¹].

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