Question

an object appears blue in white light of what colour will it appear in red light​

Answer 1

Answer:

black

Colour of any object is by the colour of light it reflects i.e if white light is incident on the object,itwill reflect blue color.so it will appear blue. But ifred light is incident on it,it will not reflect that and absorb it.so as it will not reflect any light it will appear black

Answer 2

Answer:

black

Explanation:

the real colour of the object is blue hence in red light it reflects only red colour and absorb except red colour . so, in this case the blue colour is absorbed by the red light hence the colour that the object is shown in red light is black