Waves Electromagnetic

Question 1

Electromagnetic Waves

Answer 1

waves that are created as a result of vibrations between an electric field and a magnetic field

Question 2

Properties of Electromagnetic Waves:

Answer 2

Speed of Light(c)= Electromagnetic waves travel at the speed of light 3 x10^8 m/s

Wavelength (𝜆) and Frequency (𝑓)): Electromagnetic waves exhibit a wide range of wavelengths and frequencies, forming the electromagnetic spectrum, including radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays

Question 3

Wave Phenomena and Principles

Answer 3

Reflection: When a wave encounters a boundary or obstacle, it can bounce back from the surface, changing its direction.

Refraction: The bending of waves as they pass from one medium to another with different densities.

Diffraction: The bending and spreading of waves as they pass through an opening or around obstacles.

Interference: When two or more waves meet, they can either reinforce each other (constructive interference) or cancel each other out (destructive interference).

Question 4

Critical angle

Answer 4

The critical angle (𝜃𝑐)
is the angle of incidence of a ray of light at the interface between two different optical media, where the refracted ray is bent along the surface of the boundary between the two media.

Θcrit = sin-1 (nr / ni)
Θcrit: The critical angle
nr: The refractive index of the denser medium
ni: The refractive index of the rarer medium

Question 5

Refractive index

Answer 5

The refractive index (𝑛)
of a medium is a dimensionless quantity that describes how much the speed of light is reduced when it enters the medium compared to its speed in a vacuum.

n-sin i/sin r
n= reflective index
i= incident ray
r=reflective ray