Question

why object appears coloured when viewed through a prism​

Answer 1

As a result, whenever you see any object through a prism, it will appear colored to you.

Also, its ability to reflect certain wavelengths of visible light is another reason for such a favorable outcome. It is really an interesting topic.

Answer 2

Answer:

An object appears coloured when viewed through a prism because the light beam pass through a prism and divide in seven colour VIBGYOR

this phenomenon is called scattering of light.