Question

Does critical angle depend on color of light? Explain.

Answer 1

 Yes,this is because critical angle depends on ref index which in turn depends on wavelength critical angle depends on colour of light.

Answer 2

Yes, the critical angle depends on the refractive index which turns depends on the wavelength of light so critical angle depends on the color of light.

• The critical angle is inversely proportional to the refractive index.

• When it increases the critical angle then automatically increases in wavelength of the light.

• Red light has more wavelength than the violet.

• The formula for calculating the critical angle is,

The inverse function of the sine of ( refractive index/ incident index)

• Different lights show different colors of refractive index changes so this also implies to the critical angle, it will also change.