| ⇦ | 
| ⇨ |
The electric field part of an electromagnetic wave in a medium is represented by Ex = 0
Ey = 2.5 (N / C) cos [(2π x 10⁶ rad/m) t – (π x 10⁻² rad/s) x ];
Ez = 0. The wave is:
Options
(a) moving along x direction with frequency 10⁶ Hz and wavelength 100 m.
(b) moving along x direction with frequency 10⁶ Hz and wave length 200 m.
(c) moving along -x direction with frequency 10⁶ Hz and wave length 200 m.
(d) moving along y direction with frequency 2π x 10⁶ Hz and wave length 200 m.
Correct Answer:
moving along x direction with frequency 10⁶ Hz and wave length 200 m.
Explanation:
Comparing with the equation of wave,
Ey = E₀ cos (ωt – kx)
ω = 2πf = 2π x 10⁶
Therefore, f = 10⁶ Hz
2π / λ = k = π x 10⁻² m⁻¹, λ = 200 m
Related Questions: - The cylindrical tube of a spray pump has radius R, one end of which has n fine holes,
- Magnetism of a magnet is due to
- IF A⃗ and B⃗ are two vectors and θ is the angle between them
- Two straight wires each 10cm long are parallel to one another and seperated by 2 cm.
- A student performs an experiment to determine the Young’s modulus of a wire
Topics: Electromagnetic Waves
(28)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The cylindrical tube of a spray pump has radius R, one end of which has n fine holes,
- Magnetism of a magnet is due to
- IF A⃗ and B⃗ are two vectors and θ is the angle between them
- Two straight wires each 10cm long are parallel to one another and seperated by 2 cm.
- A student performs an experiment to determine the Young’s modulus of a wire
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