| ⇦ | 
| ⇨ |
The electric vector vibration of an electromagnetic wave is given by E=(50 NC⁻1) sin ω(t-x/c). The intensity of the wave is
Options
(a) 2.3 Wm⁻²
(b) 4.3 Wm⁻²
(c) 3.3 Wm⁻²
(d) 1.8 Wm⁻²
Correct Answer:
3.3 Wm⁻²
Explanation:
The Intensity is, I = (1/2) ε₀E₀²c
I = (1/2) × (8.85 × 10⁻¹² N-m²C⁻²) × (50 NC⁻¹)² × 3 × 10⁸ ms⁻¹
I = 3.3 Wm⁻²
Related Questions: - Dimensions formula for surface tension is
- Periodic time of a satellite revolving above Earth’s surface at a height equal to R,
- The ratio of the dimensions of planck’s constant and that of the moment of inertia is
- A thin rod of length L and mass M is held vertically with one end on the floor
- If in a nuclear fusion process, the masses of the fusing nuclei be m₁ and m₂
Topics: Electromagnetic Waves
(28)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Dimensions formula for surface tension is
- Periodic time of a satellite revolving above Earth’s surface at a height equal to R,
- The ratio of the dimensions of planck’s constant and that of the moment of inertia is
- A thin rod of length L and mass M is held vertically with one end on the floor
- If in a nuclear fusion process, the masses of the fusing nuclei be m₁ and m₂
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