A light beam is traveling from Region I to region IV (refer figure). The refractive indices in Region I, II, III, and IV are `n_(0), n_(0)//2,n_(0)//6 and n_(0)//8` , respectively. The angle of incidence `theta` for which the beam just misses entering Region IV is

A light beam is travelling from Region I to Region IV (Refer Figure). The refractive index in Regions I, II , III and IV are n_(0), (n_(0))/(2), (n_(0))/(6) and (n_(0))/(8), respectively. The angle of incidence theta for which the beam just misses entering Region IV is

A light beam is travelling from Region I to IV (figure). The refractive index in regionals I,II,III and IV are n_0=(n_0)/(2)(n_0)/(6) and (n_0)/(8) respectively. The angle of incidence theta for which the beam just misses entering region IV is-

A light beam is travelling from Region I to IV (figure). The refractive index in regionals I,II,III and IV are n_0=(n_0)/(2) (n_0)/(6) and (n_0)/(8) respectively. The angle of incidence theta for which the beam just misses entering region IV is-

A beam of light passes from medium 1 to medium 2 to medium 3 as shown figure. What may be concluded about the three indices of refraction, n_(1),n_(2),and n_(3) ?

A beam of light passes from medium 1 to medium 2 to medium 3 as shown figure. What may be concluded about the three indices of refraction, n_(1),n_(2),and n_(3) ?

For a prism angle theta = 60^0 the refractive indices of the left half and right half are resp, n1 and n2 (n2gen1) as shown in figure. The angle of incidence i is chosen such that the incident light rays will have minimum deviation if n1 = n2 = n = 1.5. For case of unequal refractive indices n1 = n and n2 = n+ delat(n) the angle of emergence e = i + delta (e) . Which of the following statement is/are correct?

An intially parallel cyclindrical beam travels in a medium of refractive index mu (I) = mu_(0) + mu_(2) I , where mu_(0) and mu_(2) are positive constants and I is intensity of light beam. The intensity of the beam is decreasing with increasing radius. Answer the following questions : As the beam enters the medium, it will