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प्रश्न
In figure 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.
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उत्तर
Diagram is completed:
‘The white light splits up into seven colours which are seen on the screen and arrangement of colours from bottom to top is given by the word ‘VIBGYOR’.
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संबंधित प्रश्न
Draw a diagram to show how white light can be dispersed into a spectrum by using a glass prism. Mark the various colours of the spectrum.
Make two diagrams to explain refraction and dispersion.
Draw a diagram to show the refraction of light through a glass prism. On this diagram, mark
(i) incident ray
(ii) emergent ray, and
(iii) angle of deviation.
A beam of white light falls on a glass prism. The colour of light which undergoes the least bending on passing through the glass prism is:
(a) violet
(b) red
(c) green
(d) blue
State the speed of light in (a) air, (b) water, and (c) glass
Out of air and glass, which is optically rarer? Give reason.
What conclusion do you draw about the nature of white light in part (b)?
The periscope is an optical device with a polished surface that reflects the light falling on it.
Curved mirrors have surfaces that are spherical, cylindrical, parabolic, and ellipsoid.
State the colour which bends:
- The most.
- The least while passing through a glass prism.
