Calculate a couple of angles of deviation - perhaps with angle of incidence 20 and 40 degrees (assuming they are both below the TIR situation) - and then you may see which way to proceed.Jon Drake said:Someone please help.
Deviation in refraction refers to the bending of light as it passes from one medium to another, such as from air to water or from air to glass. This bending is caused by a change in the speed of light as it travels through the different mediums.
The amount of deviation in refraction can be calculated using Snell's law, which states that the ratio of the sine of the angle of incidence to the sine of the angle of refraction is equal to the ratio of the speeds of light in the two mediums.
Total internal reflection occurs when a light ray strikes the boundary between two mediums at an angle greater than the critical angle. This causes the light to be completely reflected back into the original medium instead of passing through to the second medium.
The critical angle can be calculated using the formula: sin θc = n2/n1, where n1 is the refractive index of the first medium and n2 is the refractive index of the second medium.
TIR has many practical applications, such as in fiber optics communications, where light is transmitted through cables without loss of signal due to TIR. It is also used in optical devices like prisms, binoculars, and periscopes.