Question

red coloured water bottle cast a shadow when we placed in the path of light if it is replaced with an identical blue colour water bottle how will the shadow be different

Answer 1

The shadow will not be as bright when it comes to the blue water bottle.

Red is a soild color, but on the other hand blue is a night light see through color.

Answer 2

When you turn off the blue light, leaving on the red and green lights, the screen will appear to be yellow. The shadows will be red and green. It may seem strange that a red light and a green light mix to make yellow light on a white screen.