MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Dispersion

A beam of whi...

Question

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]

A

White in colour

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

B

Red in colour

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

Yellow in colour

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

A patch of seven different colours

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A White in colour
First glass prism disperses the light into its constituent colours but the second inverted prism recombines all the colours back to the white beam of light.

Suggest Corrections

thumbs-up

1

Similar questions

Q. 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?

Q. Question 19
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.

Q. On passing through a prism, a parallel beam of sunlight splits into lights of several colours. Take a combination of two identical prisms as shown. A parallel beam of sunlight is incident on the face AD. The emergent light from the face BC, consists of:

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 Rakesh had passed a monochromatic light through the prism, then which of the following phenomenon would be observed?

Q. When white light passes through a glass prism, we get a spectrum on the other side of the prism. In the emergent beam the ray which is deviated least is

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Dispersion_tackle

PHYSICS

Watch in App

explore_more_icon

Explore more

Standard VII Physics

Join BYJU'S Learning Program

CrossIcon