Advertisements
Advertisements
प्रश्न
Calculate dispersive power of a transparent material given : nv = 1.56, nr = 1.54, ny = 1.55.
Advertisements
उत्तर
W = `("n"_"v" - "n"_"r")/(("n"_"y" - 1))`
`= (1.56 - 1.54)/((1.55 - 1))`
`= 0.02/0.55 = 2/55 = 0.036`
APPEARS IN
संबंधित प्रश्न
A ray PQ incident on the refracting face BA is refracted in the prism BAC as shown in the figure and emerges from the other refracting face AC as RS such that AQ = AR. If the angle of prism A = 60° and refractive index of material of prism is `sqrt3 `. Calculate angle θ.
A ray PQ incident on the face AB of a prism ABC, as shown in the figure, emerges from the face AC such that AQ = AR.
Draw the ray diagram showing the passage of the ray through the prism. If the angle of the prism is 60° and refractive index of the material of prism is `sqrt3` , determine the values of angle of incidence and angle of deviation
What is the cause of dispersion of light
A ray of light incident normally on one face of a right isosceles prism is totally reflected, as shown in fig. What must be the minimum value of refractive index of glass? Give relevant calculations.
Figure shows a ray of light passing through a prism. If the refracted ray QR is parallel to the base BC, show that (i) r1 = r2 = A/2 and (ii) angle of minimum deviation, Dm = 2i − A.
The angular dispersion produced by a prism ___________ .
By properly combining two prisms made of different materials, it is possible to
(a) have dispersion without average deviation
(b) have deviation without dispersion
(c) have both dispersion and average deviation
(d) have neither dispersion nor average deviation
The minimum deviations suffered by, yellow and violet beams passing through an equilateral transparent prism are 38.4°, 38.7° and 39.2° respectively. Calculate the dispersive power of the medium.
How does the angle of minimum deviation of a glass prism vary if the incident violet light is replaced by red light?
What is meant by a thin prism?
