Advertisements
Advertisements
प्रश्न
How does the angle of minimum deviation of a glass prism vary if the incident violet light is replaced by red light?
उत्तर
Hence relative refractive index between the prism and red light is less than the relative refractive index between the prism and violet light.
The angle of minimum deviation is directly proportional to the relative refractive index by the relation:-
δ = (μ−1)A (where A is the angle of the prism)
Therefore the angle of minimum deviation for red light is less than the violet.
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 of light passes through an equilateral glass prism such that the angle of incidence is equal to the angle of emergence and each of these angles is equal to 3/4 of angle of prism. Find the angle of deviation.
What is a dispersion of light
State any two difference between the primary rainbow and secondary rainbow
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.
Give the formula that can be used to determine refractive index of materials of a prism in minimum deviation condition ?
Can the dispersive power \[\omega = \frac{\mu_u - \mu_r}{\mu - 1}\] be negative? What is the sign of ω if a hollow prism is immersed into water?
The angular dispersion produced by a prism ___________ .
A narrow beam of monochromatic light, PQ, is incident normally on one face of an equiangular glass prism of refractive index 1.45. When the prism is immersed in a certain liquid, the ray makes a grazing emergence along the other face (See figure). Find the refractive index of this liquid. 
An equilateral glass prism has a refractive index 1.6 in the air. Calculate the angle of minimum deviation of the prism, when kept in a medium of refractive index `4sqrt(2)"/"5.`
