How will you use two identical prisms so that a narrow beam of white light incident on one prism emerges out of the second prism as white light? Draw the diagram.

Open in App

Solution

By placing two identical prism inverted with respect to the other, we get a narrow beam of white light incident on one prism and emerging out of the second prism again as white light.

Suggest Corrections

195

Similar questions

Q. In an experiment, Rakesh used an equilateral triangular glass prism and projected a narrow beam of white light source from one side of the surface of the prism. He placed a screen on the other side and saw many colours appearing as patches on the screen. But when he placed a second identical prism in an inverted position with respect to the first prism, he found a beam of white light emerging out from the other side of the second prism.

If the white ray falls on the system arranged in the given way, then what will be the topmost colour of the output light coming from the third prism?

Q. A beam of white light passes through two inverted prisms as shown.

The emergent beam of light from the second prism will be:

[0.8 mark]

Q. Two equilateral prisms are arranged as shown in figure such that a ray of white light is incident at point X The ray of light which emerges out of the prism Q

When we place a glass prism in the path of a narrow beam of white light a spectrum is obtained. What happens when a second identical prism is placed in an inverted position with respect to the first prism? Draw a labeled ray diagram to illustrate it.

In Fig. 5.40, AO is the ray of white light falling on a prism PQR. Complete the diagram till the light emerges out from the prism and falls on the screen.

Join BYJU'S Learning Program