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9.1 Introduction. In the previous chapter, you have studied about trigonometric ratios. In this chapter, you will be studying about some ways in which trigonometry is used in the life around you. Trigonometry is one of the most ancient subjects studied by scholars all over the world.
Waves Summary Notes. Waves transfer energy The higher the amplitude the greater the energy of the wave. f=no. of waves produced per second T= time for 1 wave to pass a point. Transverse Wave: The particles of the medium transmitting the wave travel at right angles to the direction of energy travel. e.g. E.M. waves.
In vacuum, all electromagnetic waves have the same speed c, whose value is : c = 299, 792, 458 ms–1. (14.1) A third kind of wave is the so-called Matter waves. They are associated with constituents of matter : electrons, protons, neutrons, atoms and molecules.
In summary, \(y(x, t)=A \sin (k x-\omega t+\phi)\) models a wave moving in the positive x-direction and \(y(x, t)=A \sin (k x+\omega t+\phi)\) models a wave moving in the negative x-direction. Equation \ref{16.4} is known as a simple harmonic wave function. A wave function is any function such that \(f(x, t)=f(x-v t)\).
Waves: This chapter explores the nature of waves, including types of waves (mechanical and electromagnetic), wave properties, and wave phenomena such as interference and diffraction. Key Features of the Textbook
The wave function is given by y(x, t) = A sin (kx − \(\omega\)t + \(\phi\)) where k = \(\frac{2 \pi}{\lambda}\) is defined as the wave number, \(\omega = \frac{2 \pi}{T}\) is the angular frequency, and \(\phi\) is the phase shift.
Textbooks PDF (I-XII) ... Chapter 9: Chapter 10: Chapter 11: Chapter 12: Chapter 13: Chapter 14: Chapter 15 Chapter 16: Answers ... NCERT, Sri Aurobindo Marg, New Delhi-110016. dceta.ncert@nic.in +91 8800440559. Important Helpline Numbers. Women Helpline Number : 7827170170.
