activity of obtainig a relation between angle of incidence and angle of refraction in points 9 class
Answers
light travels different speed in different medium depend upon the densities of the substances when light rays travel from rare medium to denser medium it bends towards the normal if the light rays travels from denser to rarer medium it bends away from the normal speed of light is maximum in vacuum it travels with a speed of 3 into 10 power 8 metre per second when it propagates in any medium it velocity is less than 3 into 10 power 8 metre per second the ratio of these two velocities is constant the constant is called refraction index snell's La is the relation between incident angle to the refracted angle when light travels from denser medium to rarer medium at a particular incident angle more than the critical angle the total interval reflection take places. to internal reflection is a phenomenon behind mirage and shining of diamond.
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