Advertisements
Advertisements
प्रश्न
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 labelled ray diagram to illustrate it.
Advertisements
उत्तर
The first prism disperses white light into its seven constituent colours and forms the spectrum. The other inverted prism recombines all the seven colors and gives a white light.
संबंधित प्रश्न
A narrow beam PQ of white light is passing through a glass prism ABC as shown in the diagram.
Trace it on your answer sheet and show the path of the emergent beam as observed on the screen DE.
(i) Write the name and cause of the phenomenon observed.
(ii) Where else in nature is this phenomenon observed?
(iii) Based on this observation, state the conclusion which can be drawn about the constituents of white light.
What is spectrum? What is the name of glass shape used to produce a spectrum?
How could you show that the colours of the spectrum combine to give white light?
What is a rainbow? What are the two conditions necessary for the formation of a rainbow in the sky?
A wave has wavelength 50Å of State the speed in vacuum.
The phenomena of light involved in the formation of rainbow are ______.
Curved mirrors have surfaces that are spherical, cylindrical, parabolic, and ellipsoid.
What is a rainbow?
In the following diagram showing dispersion of white light by a glass prism, the colours 'P' and 'Q’ respectively are:
State the colour which bends:
- The most.
- The least while passing through a glass prism.
