When electromagnetic waves strike the boundary of denser medium they are
o Reflected, in phase
o Reflected out of phase by 180°
O reflected, they are completely absorbed
O Transmitted
Answers
Answer:
reflected out of phase by 180 degree
The answer is (b) Reflected out of phase by 180°.
Electromagnetic waves when striking the boundary of a denser medium, they are reflected and their phase is changed by 180°. This is because when they enter a denser medium, their amplitude and direction both will change. When reflected from a rarer medium, their phase remains the same as the amplitude, and direction in the rarer medium remains the same.
What are electromagnetic waves?
Electromagnetic waves are characterized by an electric field component and a magnetic field component. The electric and magnetic components are both perpendicular to each other and also perpendicular to the direction of motion of the wave. These waves are three-dimensional. These waves do not require a medium to travel and can also travel in a vacuum. Light is an example.
How to classify medium into denser and rarer?
Denser and rarer are relative terms. A denser medium will have a lower speed of light when passing through it than the medium it is being compared to. Similarly, a rarer medium will have a higher speed of light when passing through it than the medium it is being compared to.