Advertisements
Advertisements
प्रश्न
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.
Advertisements
उत्तर
Dispersive power, `omega = (δ_"v" - delta_r)/delta_y = (3.75^circ - 2.86^circ)/(3.25^circ) = 0.274^circ`
APPEARS IN
संबंधित प्रश्न
A ray PQ incident normally on the refracting face BA is refracted in the prism BAC made of material of refractive index 1.5. Complete the path of ray through the prism. From which face will the ray emerge? Justify your answer.
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.
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.
Describe an activity to show that the colours of white light splitted by a glass prism can be recombined to get white light by another identical glass prism. Also, draw a ray diagram to show the recombination of the spectrum of white light.
Out of blue and red light which is deviated more by a prism? Give reason.
Give the formula that can be used to determine refractive index of materials of a prism in minimum deviation condition ?
A prism can produce a minimum deviation δ in a light beam. If three such prisms are combined, the minimum deviation that can be produced in this beam is _______________.
Two prisms of identical geometrical shape are combined with their refracting angles oppositely directed. The materials of the prisms have refractive indices 1.52 and 1.62 for violet light. A violet ray is deviated by 1.0° when passes symmetrically through this combination. What is the angle of the prisms?
Calculate dispersive power of a transparent material given : nv = 1.56, nr = 1.54, ny = 1.55.
When a ray of white light is incident obliquely on the first surface of a prism, then ______.
