Question

what is refractive index?write an activity to find refractive index of glass.draw the necessary diagram​

Answer 1

what is refractive index?write an activity to find refractive index of glass.draw the necessary diagram

Answer 2

Answer:

Refractive index is a measure of how much a substance, such as glass or water, can bend light. It is defined as the ratio of the speed of light in a vacuum to the speed of light in the substance.

Explanation:

Refractive index is a measure of how much a substance, such as glass or water, can bend light. It is defined as the ratio of the speed of light in a vacuum to the speed of light in the substance. The refractive index of a material affects the amount of bending, or refraction, that occurs when light passes through it.

To find the refractive index of glass, one can perform an experiment called the "glass block experiment". This experiment requires a rectangular glass block, a ray box or laser pointer, a protractor, and a piece of paper.

First, shine the light source at an angle into the glass block. The light will bend as it enters the block, and then again as it exits the block. Use the protractor to measure the angles of incidence and refraction. Repeat this process for different angles of incidence.

Using Snell's law, the refractive index of the glass block can be calculated by taking the ratio of the sine of the angle of incidence to the sine of the angle of refraction. The diagram below shows the setup of the glass block experiment.

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