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प्रश्न
Make two diagrams to explain refraction and dispersion.
उत्तर
When we see a pool of water. The pool appears less deep as it is. This is due to the refraction of light.
When white light is allowed to pass through the glass prism. It splits into seven colour this is called dispersion of light.
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संबंधित प्रश्न
In the formation of spectrum of white light by a prism:
which colour is deviated most?
A beam of white light is shone onto a glass prism. The light cannot be:
(a) deviated
(b) dispersed
(c) focused
(d) refracted
State the speed of light in (a) air, (b) water, and (c) glass
- A beam of monochromatic light undergoes minimum deviation through an equiangular prism, how does the beam pass through the prism, with respect to its base?
- If white light is used in the same way as in part (a) above, what change do you expect in the emergent beam?
- What conclusion do you draw about the nature of white light in part (b)?
What conclusion do you draw about the nature of white light in part (b)?
A student has to trace the path of a ray of light through a glass prism. List four precautions he should observe for better results.
Say TRUE or FALSE
Rainbow is formed by dispersion of which light by water drops
Name the scientist who was the first to use a glass prism to obtain the spectrum of sunlight.
A prism of refractive index `sqrt2` and refracting angle A produces minimum deviation δm of a ray on one face at an angle of incidence 45°, The values of A and δm are, respectively ______.
State True or False:
"Wavelength of red light is close to 700 nm.”
