| ⇦ | 
| ⇨ |
The speed of electromagnetic waves in vaccum is equal to
Options
(a) μ₀ε₀
(b) √(μ₀ε₀)
(c) 1/√(μ₀ε₀)
(d) 1/(μ₀ε₀)
Correct Answer:
1/√(μ₀ε₀)
Explanation:
According to Maxwelll, it is found that the electromagnetic waves travel in free space (or vacuum) with a speed is given by
c = 1 / √(μ₀ε₀) = 3 × 10⁸ ms⁻¹
Where, μ₀ and ε₀ are absolute permeability and permittivity of the free space, respectively.
where, μ₀ = 4π × 10⁻⁷ Wb A⁻¹m⁻¹
ε₀ = 8.85 × 10⁻¹² C² N⁻¹m⁻²
Related Questions: - To obtain a p-type semiconductor, germanium must be doped with
- Efficiency of a Carnot engine is 50% when temperature of sink is 500K. In order
- The time period of a mass suspended from a spring is T. If the spring is cut into four
- Two circuits have a mutual inductance of 0.1 H. What average e.m.f. is induced
- A circular disc of radius R and thickness R/6 has moment of inertia I about an axis
Topics: Electromagnetic Waves
(28)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- To obtain a p-type semiconductor, germanium must be doped with
- Efficiency of a Carnot engine is 50% when temperature of sink is 500K. In order
- The time period of a mass suspended from a spring is T. If the spring is cut into four
- Two circuits have a mutual inductance of 0.1 H. What average e.m.f. is induced
- A circular disc of radius R and thickness R/6 has moment of inertia I about an axis
Topics: Electromagnetic Waves (28)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply