Waves

Refraction in Daily Life The effect of refraction causes seaside near to a cape is stony while sea near to a bay is sandy. At the middle of the sea, the wavefront is a linear line. This linear form is due to the nearly equal similar depth of water. When waves move close to the … Read more

Refraction of Waves at a Boundary Refraction is the change in direction of propagation when a wave moves from one medium to another medium. It is caused by the change of the speed of the wave when moving from one medium to another. For water waves, refraction occurs when the waves move from one region … Read more

Speed of Water Waves When straight waves pass from deep to shallow water, their wave-length becomes shorter speed decreases frequency remain unchanged This can be illustrated by placing a piece of rectangular Perspex of suitable thickness in the tank to reduce the local water depth. The figure below shows the wavefront diagram of the wave … Read more

Reflection of Sound Wave Experiment Conclusion: The angle of incidence, i is equal to the angle of reflection, r. Sound waves obey the law of reflection. That is, the angle of incidence is equal to the angle of reflection. Q & A Why hard plywood is used? A hard surface is a good sound reflector. … Read more

Reflection of Light Wave The characteristic of reflection of light enables us to see objects. Objects that do not emit light are not seen in the dark. An object only is seen if light is incident on it a reflected back to our eyes Experiment The experiment of reflection of light wave shows that reflection … Read more

Reflection Reflection occurs when an incident wave hits a reflector and reflected back. The direction of propagation of the wave changed when it is reflected. The wavelength, frequency and speed of wave remain unchanged. The amplitude of the wave may or may not change depend on the material of the reflector and the shape of … Read more

Ripple Tank Q & A What is the function of the Eccentric/Motor? The function of the eccentric /motor is to produce a reciprocating motion. Q & A What is the function of the dipper? To produce waves of different shape  Straight parallel waves may be produced by a horizontal wooden bar.  Circular waves may be … Read more

Displacement – Distance Graph A Displacement – Distance graph shows the position of each particle in a wave relative to its distance from a reference point. The distance between two (2) successive crest or trough is the wavelength. The maximum displacement of the particles from the equilibrium position (displacement = 0) is the amplitude. The … Read more

Finding wavelength from a diagram Transverse Wave Wavelength is the distance between two successive crests or troughs. Longitudinal Wave Wavelength is the distance between two successive compressions or rarefaction. Wavefront diagram Wavelength is the distance between two successive wavefront Example 1: The figure above shows the propagation of a water wave. What is the amplitude … Read more

Waves can be classified into 2 groupstransverse wavelongitudinal wave Transverse Wave A transverse wave is a wave where the particles of the medium vibrate in a direction that is perpendicular to the direction of the wave motion. Example:Light wave, ripple, radio wave Longitudinal Wave A longitudinal wave is a wave where the particles of the … Read more