Advertisements
Advertisements
Question
The diagram below shows a point source P inside a water container. Four rays A, B, C, D starting from the source P are shown up to the water surface
1) Show in the diagram the path of these rays after striking the water surface.
The Critical Angle for the water-air surface is 48°.
2) Name the phenomenon which the rays B and D exhibit.
Solution
1) Path of the rays after striking the water surface is shown below:
2) Ray 'B' and ray 'D' exhibit the phenomenon of reflection and total internal reflection (TIR), respectively.
APPEARS IN
RELATED QUESTIONS
Solve the previous problem if the paperweight is inverted at its place so that the spherical surface touches the paper.
Express the refractive index μ of a medium in terms of the angle of incidence i in air and the angle of refraction r in a denser medium.
Images formed by totally reflecting prisms are brighter than the image formed by ordinary reflected light, why?
Solve Numerical example.
A monochromatic ray of light is incident at 37° on an equilateral prism of refractive index 3/2. Determine angle of emergence and angle of deviation. If angle of prism is adjustable, what should its value be for emergent rays to be just possible for the same angle of incidence?
For a ray of light, the critical angle is minimum when it travels from ______.
State the condition under which total internal reflection occurs. Give the mathematical expression for total internal reflection.
A given ray of light suffers minimum deviation in an equilateral prism P. Additional prism Q and R of identical shape and of the same material as P are now added as shown in the figure. The ray will now suffer ______.
Find the value of θ in the given figure.
State two differences between normal reflection and total internal reflection.
