Geometrical OpticsHard
Question
A ray of light strikes a cubical slab surrounded by air as shown in the figure. Than the geometrical path length traversed by the light in the slab will be :
Options
A.2√3 m
B.2m
C.6m
D.
m
mSolution
Critical angle
sin c = 1 ; sin c = 
Geometrical path length traveled by the light in the slab will be = 2 + 1 + 2 + 1 = 6m
Create a free account to view solution
View Solution FreeMore Geometrical Optics Questions
The plane faces of two identical plano-convex lenses, each having a focal length of 50 cm are placed against each other ...Two lenses of power -15 D and + 5D are in contact with each other. The focal length of the combination is...A bulb is located on a wall. Its image is to be obtained on a parallel wall with the help of convex lens. If the distanc...A triangular prism of glass is shown in the fig. A ray incident normally to the one face is totally reflected if θ ...An equiconvex lens has a power of 5 dioptre. If it is made of glass of refractive index 1.5. then radius of curvature of...