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The dimension of 1/2ε₀E², where ε₀ is permittivity of free space and E is electric field, is:
Options
(a) ML²T⁻²
(b) ML⁻¹T⁻²
(c) ML²T⁻¹
(d) MLT⁻¹
Correct Answer:
ML⁻¹T⁻²
Explanation:
1/2 ?￢ﾂﾀE² represents energy density i.e., energy per unit volume.
⇒ [ 1/2 ?￢ﾂﾀE² ] = ML²T⁻² / L³
= ML⁻¹T⁻²
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Question Type: Memory
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Difficulty Level: Easy
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Topics: Physical World and Measurement
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A disc of mass 100 g is kept floating horizontally in air by firing bullets
- At absolute temperature, the kinetic energy of the molecules
- A metal rod of length l cuts across a uniform magnetic field B with a velocity v.
- A concave mirror of focal length f₁ is placed at a distance d from a convex lens
- On adjusting the P-N junction diode in forward bias,
Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Physical World and Measurement (103)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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