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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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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Hard X-rays for the study of fractures in bones should have a minimum wavelength
- An electromagnetic wave of frequency v = 3.0 MHz passes from vacuum into
- A ray enters a glass sphere of refractive index μ=√3 at an angle of incidence of 60⁰
- A nucleus disintegrates into two nuclear parts which have their velocities in the ratio
- A 1kg stone at the end of 1 m long string is whirled in a vertical circle at constant speed
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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