NEET
- Exam
- NEET
- Subject
- Physics
- Chapter
- Electromagnetic Waves
NEET · Physics · Electromagnetic Waves
Consider the following statements regarding electromagnetic waves:...
Consider the following statements regarding electromagnetic waves:
Statement-I: Electromagnetic waves are transverse waves in which the electric field and magnetic field oscillate perpendicular to each other and to the direction of propagation.
Statement-II: The speed of electromagnetic waves in vacuum depends only on the permittivity and permeability of free space.
Statement-III: In electromagnetic waves, the ratio of the magnitudes of the electric field to the magnetic field is equal to the speed of light in vacuum.
Statement-IV: X-rays and gamma rays have longer wavelengths than visible light.
Choose the correct option:
Options
- AAll four statements are true.
- BStatement-I, Statement-II, and Statement-III are true; Statement-IV is false.
- CStatement-I and Statement-III are true; Statement-II and Statement-IV are false.
- DStatement-II and Statement-IV are true; Statement-I and Statement-III are false.
Correct answer
B. Statement-I, Statement-II, and Statement-III are true; Statement-IV is false.
Step-by-step solution
- Statement-I: This is true.
Electromagnetic waves are transverse in nature, with the electric field ((\mathrm{E})) and magnetic field (B) oscillating perpendicularly to each other and the direction of wave propagation.
- Statement-II: This is true. The speed of electromagnetic waves in a vacuum is given by:
(c=\frac{1}{\sqrt{\mu_0 \epsilon_0}})