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When two or more wave motions travelling through a medium superimpose on each other, a new wave is formed in which resultant displacement at any instant is equal to the vector sum of the displacements due to individual waves at that instant. The light is a form of energy which goes through a medium as transverse wave motion.

Basic Requirement

  • Class 12 Student

Skills Covered

  • Wave Front

  • Deduction Of The Snell's Law

Expert Review

Did You know ?

Huygens's Principle explains the concept of diffractive waves as the bending of waves around edges.

As a result of this principle, we have a reflection as a result of this principle. Refraction and interference can also be explained with this principle. Everything that experiences this phenomenon is a wave. We can prove that light traveling through a slit is a wave by applying this theory.

Huygens construction teaches us that light moves forward and does not reflect back even when the medium is homogeneous (i.e., its optical properties are the same everywhere).

Furthermore, we assume that secondary wavelets are emitted only in the direction of the wave's advancement.

The wave may be reflected from a discontinuity when there is a sudden obstruction or charge in the medium, as discussed below. Secondary wavelets on the backward side can also be considered.


Points to consider

1) An elastic medium propagates a periodic disturbance, resulting in wave motion. The variation of pressure in air, the movement of a guitar string, or variations in the intensities of electric and magnetic fields in space, can all be considered waves.

2) Wave motion can be measured in terms of amplitude, wavelength, and frequency.

3) An influential experiment was Young's double slit experiment, which demonstrated that light shining through two slits behaved more like waves than particles when it struck two slits in a screen.

4) Some phenomena can also be described by the phase associated with a wave.

5) The velocity of a wave is equal to the product of the wavelength and the frequency.

Term Definitions

1) Amplitude: In which a variable reaches its maximum value either in one direction or the other.

2) Wave: alternating between two maximums in two opposite directions.

3) Frequency: The number of vibrations per second.

4) Wavelength: The distance traveled by a wave in a full period (1/frequency).

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Course creator

                                 Yogesh P

Yogesh P

I Am School Teacher having more than 12 years of experience subject of Physics in ICSE and CBSE Schools. Also, I have done M.Sc., B.Ed. And presently pursuing post-graduation diploma in school leadership and Management.