Red light is incident in air on a 30 o - 60 o - 90 o prism as shown. The inciden

Question

Red light is incident in air on a 30o - 60o - 90 o prism as shown. The incident beam is directed at an angle of ?1 = 38.3owith respect to the horizontal and enters the prism at a height h = 19 cm above the base. The beam leaves the prism to the air at a distance d = 52.8 along the base as shown.

5)The red beam is now replaced by a violet beam that is incident at the same angle ?1 and same height h. The prism has an index of refraction nviolet = 1.41 for violet light. Compare dviolet, the exit distance for violet light, to d, the exit distance for red light.

dviolet < d

dviolet = d

dviolet > d

6)Suppose now that the violet beam is incident at height h, but makes an angle ?1,v = 60o with the horizontal. What is ?3,v, the angle the transmitted beam makes with the horizontal axis?

Explanation / Answer

5) generally when violet colour light more dispersed than red colour light so violet can be travel below the red then violet cover less distance than red there fore dviolet < d

6)from given data i=600,then r=30 because i+r=90

and from diagram for minimum deviation angle incident angle=emergence (transmitted )angle

therefore transmitted angle =600

Related Questions

Navigate

• Browse (All)
• Browse R
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.