Question

which colour deviate minimum during the dispersion of light through a prism?

Answer 1

The colour red is the colour which would show the least deviation out of all other colors.

Explanation:

• The main reason behind the Dispersion of the 7 different colours when passed through the prism which is the wavelength of these colours which in air travel together.
• It have different speed in other medium like prism and the wavelength of red is the highest.
• Hence the speed being inversely proportional allows it to deviate the least out of others.

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Answer 2

Red light deviate minimum during the dispersion of light through a prism.

Explanation:  

• Dispersion is the deviation of the path of light. Prism is a 3 dimensional triangular glass object which is used in studying the properties of light.  

• Since white light consists of seven colours, once they enter the prism, due to different wavelengths they tend to separate from each other.  

• The red light has the most value of the wavelength hence the dispersion of the red light is the least. Using this property of red light, the red light is made to use for making of any danger signals.

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