Advertisements
Advertisements
Question
If the amplitude of the magnetic field is 3 x 10-6 T, then amplitude of the electric field for a electromagnetic waves is ______.
Options
100 V m-1
300 V m-1
600 V m-1
900 V m-1
Solution
If the amplitude of the magnetic field is 3 x 10-6 T, then amplitude of the electric field for electromagnetic waves is 900 V m-1.
APPEARS IN
RELATED QUESTIONS
When Sunita, a class XII student, came to know that her parents are planning to rent out the top floor of their house to a mobile company she protested. She tried hard to convince her parents that this move would be a health hazard.
Ultimately her parents agreed :
(1) In what way can the setting up of transmission tower by a mobile company in a residential colony prove to be injurious to health?
(2) By objecting to this move of her parents, what value did Sunita display?
(3) Estimate the range of e.m. waves which can be transmitted by an antenna of height 20 m. (Given radius of the earth = 6400 km)
The dimension of `1/(mu_0 ∈_0)` is
Fraunhofer lines are an example of _______ spectrum.
Why are e.m. waves non-mechanical?
Explain the Maxwell’s modification of Ampere’s circuital law.
Maxwell’s displacement current is a response to inconsistency in the ______.
In plane electromagnetic wave propagation velocity v, wavelength λ and frequency ν are related by ______.
Which one of the following does not represent simple harmonic motion? Here y denotes the instantaneous displacement. Here, A and B are constants and co is the angular frequency.
The source of electromagnetic waves can be a charge ______.
- moving with a constant velocity.
- moving in a circular orbit.
- at rest.
- falling in an electric field.
Show that the radiation pressure exerted by an EM wave of intensity I on a surface kept in vacuum is I/c.