⇦ | ⇨ |
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 conducting square frame of side ‘a’ and a long straight wire carrying current I
- The internal energy change in a system that has absorbed 2 kcals of heat
- In Young’s double slit experiment, the locus of the point P lying in a plane
- A man goes 10 m towards north, then 20m towards east, the displacement is
- 4 point charges each +q is placed on the circumference of a circle
Topics: Electromagnetic Waves
(28)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A conducting square frame of side ‘a’ and a long straight wire carrying current I
- The internal energy change in a system that has absorbed 2 kcals of heat
- In Young’s double slit experiment, the locus of the point P lying in a plane
- A man goes 10 m towards north, then 20m towards east, the displacement is
- 4 point charges each +q is placed on the circumference of a circle
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