| ⇦ | 
| ⇨ |
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: - A bullet is shot from a riffle. As a result the rifle recoils.The kinetic energy of riffle
- A thin convex lens of refractive index 1.5 has 20 cm focal length in air. If the lens
- The optical path of a monochromatic light is same if it goes through 4.0 cm
- A plank with a box on it at one end is gradually raised about the other end.
- A planar coil having 12 turns carries 15 A current. The coil is oriented with respect
Topics: Electromagnetic Waves
(28)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A bullet is shot from a riffle. As a result the rifle recoils.The kinetic energy of riffle
- A thin convex lens of refractive index 1.5 has 20 cm focal length in air. If the lens
- The optical path of a monochromatic light is same if it goes through 4.0 cm
- A plank with a box on it at one end is gradually raised about the other end.
- A planar coil having 12 turns carries 15 A current. The coil is oriented with respect
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