 # NCERT Solutions for Class 11 Physics Chapter 15 Free PDF Download

## NCERT Solutions for Class 11 Physics Chapter 15 Waves

NCERT Solutions for Waves Class 11 Physics will strengthen student’s ability to grasp this chapter of Physics. It will help students to apply the conceptual knowledge in an easy way of solving the problems given in the chapter. Our expert teachers of Physics are always working hard for the subject to give the best NCERT Solutions for Class 11 Physics Chapter 15 Waves.

In this NCERT solution for Class 11 Physics Chapter 15 Waves, we have taken a wire as a reference for signifying a wave motion. Student can gain a lot of knowledge about waves by solving questions with the help of our NCERT Solutions.

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### CBSE Class 11 Physics Chapter 15 Waves NCERT Solutions

NCERT Solutions for Class 11 Physics Chapter 15 Waves will provide you with the answers to the questions from the textbook. The student will learn about waves characteristics comprising of its frequency, amplitude, wavelength, phase, resonance, displacement, etc.

The different types of problems and examples will help the student to get strong concepts of the chapter. Waves are very interesting and easy to understand the chapter in CBSE class 11 Physics. Students must prepare this chapter using our Toppr app well to score well in their board examination.

### Subtopics covered under NCERT Solutions for Class 11 Physics Chapter 15

• 15.1: Introduction
• 15.2: Transverse and longitudinal waves
• 15.3: Displacement relation in a progressive wave
• 15.3.1 Amplitude and Phase
• 15.3.2 Wavelength and Angular Wave Number
• 15.3.3 Period, Angular Frequency and Frequency
• 15.4: The speed of a traveling wave
• 15.4.1 Speed of a Transverse Wave on Stretched String
• 15.4.2 Speed of a Longitudinal Wave (Speed of Sound)
• 15.5: The principle of superposition of waves
• 15.6: Reflection of waves
• 15.6.1 Standing Waves and Normal Mode
• 15.7: Beats
• 15.8: Doppler effect
• 15.8.1 Source Moving; Observer stationery
• 15.8.2 Observer Moving; Source stationery
• 15.8.3 Both Source and Observer Moving

### NCERT Solutions for Class 11 Physics Chapter 15

NCERT Solutions for Class 11 Physics Chapter 15 Waves help students to understand this fundamental chapter of Physics. This chapter is comprising of comprehensive questions and solutions on a very important topic of physics such as questions on Wave dynamics. Questions from this chapter are repeatedly coming in exams and this chapter will guide you through each and every topic. NCERT Solutions also discusses the different type of waves such as string wave, sound in air and various dependence factors like pressure, humidity and temperature.

Let us discuss the sub-topics in detail.

15.1: Introduction:

The patterns, which move without the actual physical transfer or flow of matter as a whole, are called waves. In this chapter, the student will study such waves.

15.2: Transverse and longitudinal waves:

The student will learn about two main types of waves such as Transverse and longitudinal waves.

15.3: Displacement relation in a progressive wave:

This section deals with the displacement relation in a progressive wave. Equation of wave will represent a sinusoidal traveling wave.

15.3.1 Amplitude and Phase:

Two main characteristics of waves like amplitude and phase will give an important concept about waves.

15.3.2 Wavelength and Angular Wave Number:

Wavelength is the minimum distance between two points having the same phase.

15.3.3 Period, Angular Frequency and Frequency:

The student will study formula and equation dealing with the period and frequency of a wave.

15.4: The speed of a traveling wave:

A formula given here will determine the speed of propagation of a traveling wave using the value of its wavelength.

15.4.1 Speed of a Transverse Wave on Stretched String:

The student will study to calculate the speed of transverse waves on a stretched string.

15.4.2 Speed of a Longitudinal Wave (Speed of Sound):

The student must know that the sound waves travel in the form of compressions and rarefactions of small volume elements of air. This concept will give the speed of sound in a different medium.

15.5: The principle of superposition of waves:

Principle of superposition of waves says that when the pulses overlap then the resultant displacement will be the algebraic sum of the displacement due to each pulse.

15.6: Reflection of waves:

If a pulse or a wave meets a boundary, then a reflection of waves occurs.

15.6.1 Standing Waves and Normal Mode:

The student will learn about two waves standing and normal waves in this section.

15.7: Beats:

The student will study the interesting phenomenon arising from the interference of waves i.e. beats.

15.8: Doppler effect:

It is a very important concept of waves. It is the motion-related frequency change in sound waves.

15.8.1 Source Moving; Observer stationery:

The student will study the Doppler effect and its related equation for moving source and stationary observers.

15.8.2 Observer Moving; Source stationery:

The student will study the Doppler effect and its related equation for moving observer and stationary source.

15.8.3 Both Source and Observer Moving:

The student will study the Doppler effect and its related equation for both the moving observer and moving source.

You can download NCERT Solutions for Class 11 Physics Chapter 15 PDF by clicking on the button below. ### Download Toppr – Best Learning App for Class 5 to 12

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