NCERT Solutions for Class 11 Physics Chapter 15: Waves deals with the concepts of wave and wave motion. Wave motion is referred to as the energy and momentum movement from one point to another in a medium instead of actually transferring the substances between the places.
Class 11 Physics Chapter 15 Waves is a part of Unit 10 Oscillations and Waves which has a weightage of 10 marks in the Class 11 Physics Examination. The chapter covers concepts of transverse and longitudinal waves, the principle of superposition of waves, and the Doppler effect.
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NCERT Solutions for Class 11 Physics Chapter 15
The NCERT Solutions for Chapter 15 of Class 11 Physics are as given below –
Class 11 Physics Chapter 15 – Concepts Covered
- A wave is a disturbance that travels through a material medium as a result of the repeated periodic motion of the particles of the medium about their mean positions without any actual transportation of matter.
| The particles of the medium traversed by a wave have relatively small vibrations about their mean positions. However, the particles are not displaced permanently in the direction of propagation of the wave. |
- Mechanical waves can be propagated or produced only in a material medium.
| These waves work on Newton’s laws of motion. For example, waves on strings, waves on the water surface, sound waves etc. |
- Electromagnetic Waves are waves that do not require any material medium for their production and propagation. They can pass through a vacuum or any other material medium.
| Some examples of electromagnetic waves are visible light, ultraviolet light, microwaves, radio waves, etc. |
- Wave velocity is the time rate of propagation of wave motion in a given medium. It depends upon the nature of the medium.
| Wave velocity (υ) = frequency (v) x wavelength (λ) |
- Matter waves are associated with moving particles of matter, like protons, electrons, neutrons etc.
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