white light is passed through a yellow filter followed by a blue filter what is da colour of the emergent ray?

Question

it is about the chapter photographic camera in physics icse.

Answer 1

No light emerges out..

The 3 primary colours of light are red, blue & green.

The secondary colors of light are those colors which are formed when two primary colors are mixed in equal amounts.
Mixing blue and green light results in cyan light.
Mixing red and blue light results in magenta light.
And mixing red and green light results in yellow light.

Filters can be thought of as absorbing one or more of the primary colors of light which are incident upon it, allowing remaining colors to be transmitted. For instance, a green filter will absorb all wavelengths except for green light. In this sense, filters subtract colors from the mix of incident light, allowing only selected colors to pass through.

When white light is first passed through a yellow filter, all colours are absorbed except the yellow light (i.e.red+green pass through & blue is absorbed).

When this is now passed through a blue filter, all colours except blue is absorbed. Hence, yellow (red+green) is absorbed and no light emerges out.

Answer 2

Take out the widely used colors from the white and additionally you wind up with a blue mild. concern is that it does no longer in all hazard artwork like that. you will no longer turn the sunshine blue, you incredibly turn it orange. The clear out will in simple terms shade the sunshine. whilst you're photographing some thing using those filters then the image will show in simple terms the blue lighted aspects. The purple clear out gets boost the fairway and the yellow clear out will amp the violet. Your image would be an exceedingly "cool" blue-ish shade

Answer 3

white

Answer 4

the yellow filter will absorb all light except yellow ,which will be reflected on to the blue filter which will in turn absorb it (as blue filters reflect only blue light) thereby causing darkness as no light is left out.

Answer 5

A yellow filter only let pass yellow light.
The blue filter only let pass blue light. So if this filter only gets yellow,
noting comes out.

Th

Answer 6

green