Advertisements
Advertisements
Question
The deviation produced for violet, yellow and red lights for crown glass are 3.75°, 3.25° and 2.86° respectively. Calculate the dispersive power of the crown glass.
Solution
Dispersive power, `omega = (δ_"v" - delta_r)/delta_y = (3.75^circ - 2.86^circ)/(3.25^circ) = 0.274^circ`
APPEARS IN
RELATED QUESTIONS
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.
Two monochromatic rays of light are incident normally on the face AB of an isosceles right-angled prism ABC. The refractive indices of the glass prism for the two rays '1' and '2' are respectively 1.38 and 1.52. Trace the path of these rays after entering through the prism.
State any two difference between the primary rainbow and secondary rainbow
If three identical prisms are combined, is it possible to pass a beam that emerges undeviated? Undispersed?
If a glass prism is dipped in water, its dispersive power ___________ .
How does the angle of minimum deviation of a glass prism vary if the incident violet light is replaced by red light?
Define angular dispersion.
The refractive indices of material for red, violet and yellow colour light are 1.52, 1.62 and 1.59 respectively.
Calculate the dispersive power of the material. If the mean deviation is 40°. What will be the angular dispersion produced by a prism of this material?
When a ray of white light is incident obliquely on the first surface of a prism, then ______.
