. Name two factors which affect the critical angle for a given pair of media


Name two factors which affect the critical angle for a given pair of media. State how do the factors affect it.

 

Best Answer

The factors which affect the critical angle are:

(i)The colour (or wavelength) of light, and

(ii)The temperature

(i)Effect of colour of light: The critical angle for a pair of media is less for the violet light and more for the red light. Thus critical angle increases with increase in wavelength of light.

(ii)Effect of temperature: The critical angle increases with increase in temperature because on increasing the temperature of medium, its refractive index decreases.

 

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