What is the difference in refraction through a prism and refraction through a glass slab?
Asked by Topperlearning User | 10th Jun, 2014, 02:00: PM
When a ray of light suffers refraction through a Glass slab it neither converges or diverges but gets displaced parallel to itself.After refraction at two parallel faces of a glass slab, the ray of light emerges in a direction parallel to the incident ray on the slab.Hence no dispersion occur, but only lateral displacement. whereas in a prism a ray of light suffers two refractions on passing through a prism and hence deviates through a certain angle from its original path.
Answered by | 10th Jun, 2014, 04:00: PM
- Show that the angle of deviation will be minimum when a light ray passes through a prism symmetrically.
- What is a prism?
- Calculate the deviation produced by a prism of angle 8 degree, for a material of refractive index 1.5.
- Define dispersion.
- What causes the phenomenon of dispersion?
- Can we combine two prism? If yes what is the purpose?
- Calculate the angular dispersion produced by a prism of angle 6 degree, if the refractive indices of material of prism for blue and green colours are 1.664 and 1.655.
- Define dispersive power and derive its formula.
- State the factor on which the dispersive power of a prism depends?
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