When Talha Speaks...

  i) Time Period: The required by one point on a wave to complete one vibration is called Time Period.It is denoted by “T” and its S.I. unit is second (s). ii) Frequency: The number of waves produced by any source in unit time (1 second) is called frequency. OR The number of waves passing through a point in unit time is called frequency. It is denoted by “f” and its S.I. unit is Hertz(Hz). or                                                                 iii) Wavelength: The linear distance between two consecutive crests or troughs is called wave length of that wave. OR The linear distance between two con...

  i) Reflection of Waves: “Bouncing back of waves into same medium by striking other medium surface is called reflection” When a vertical straight surface is placed in the path of the incoming waves the incident waves are reflected from the surface at the same angle. It can be seen that the reflected waves obey the law of reflection. For Example, the angle of the incident wave along the normal will be equal to the angle of the reflected wave. ii) Refraction of Waves: “When waves enter from one medium to another medium then as result the waves change direction this is called Refraction of waves”. When a flat piece of a block is immersed in the ripple tank, water depth becomes shallow. You will find that the wavelength of the plane waves shortens and changes direction, as they move from the boundary between two media, deep to shallow water. However, the frequency of water waves stays the same in both waves because it is the same as the frequency of the vibrator. This result...

S.no. Mechanical Waves Electromagnetic Waves 1 Mechanical waves are such waves that need a medium for propagation. Electromagnetic waves are such waves that do not need a medium for propagation.   2 Mechanical waves are produced by vibratory motion in the respective medium.   Electromagnetic waves are produced by a changing of electric and magnetic fields. 3 Sound waves, water waves, and seismic waves are some examples of mechanical waves Radio waves, microwaves, light waves, U.V waves and infrared waves are some examples of electromagnetic waves. 4 Mechanical waves consist of transverse as well as longitudinal waves. Electromagnetic waves are only comprised of a transverse wave in nature. 5 Mechanical waves cannot travel through the vacuum. Electromagnetic waves travel throu...

S.No Transverse Waves Longitudinal Waves 1 Those waves in which particles of the medium vibrate perpendicular to the direction of propagation of waves are called transverse waves. Those waves in which particles of the medium vibrate parallel to the direction of propagation of waves are called longitudinal waves. 2 These waves consists of Crests (Upper/Positive Part of wave where displacement of medium is maximum) and Troughs(Lower/Negative part of wave where displacement of medium is minimum) These waves consists of Compressions(region where particles are closer than average) and Rarefactions(region where particles are father apart than average) 3 For Example: Water waves, waves in rope, light waves. For Example: Sound waves, Waves in Spring, Seismic waves.

  Waves or Wave Motion: A method to transport energy from one point to another point without transfer of matter is called wave. Formation of Waves: When particles of a medium are disturbed then as a result this disturbance travels from one point to another so by this mechanism energy is transported from one point to another. For Example. 1. Waves in Rope or String        2. Waves in a Slinky Spring      3. Water waves in Ripple Tank 1. Wave Motion by using a Rope: We can produce waves on a rope by attaching one end on a wall or tree and continuously moving the other end up and down. as shown in figure . These up-and-down movements produce oscillations or vibrations. We can observe that the generated rope waves travel towards the wall or tree, whereas the rope itself moves only up and down. The rope is the medium through which the waves travel or propagate. 2. Waves in...