Advertisements
Advertisements
प्रश्न
Total internal reflection occurs only when a ray of light passes from a ______ medium to a ______ medium.
उत्तर
Total internal reflection occurs only when a ray of light passes from a denser medium to a rarer medium.
APPEARS IN
संबंधित प्रश्न
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.
Draw the diagram of a right-angled isosceles prism which is used to make an invented image erect
Prove the statement.
A rainbow is the combined effect of the refraction, dispersion, and total internal reflection of light.
Plot a graph between
Angle of incidence versus angle of refraction.
If a light ray does not undergo, refraction at the boundary between two media, the angle of incidence is:
Can light be ‘piped’ like sound in a doctor’s stethoscope?
Write down the relationship between the critical angle and the refractive index of the medium.
A rectangular block of glass ABCD has a refractive index 1.6. A pin is placed midway on the face AB (Figure). When observed from the face AD, the pin shall ______.
- appear to be near A.
- appear to be near D.
- appear to be at the centre of AD.
- not be seen at all.
A jar of height h is filled with a transparent liquid of refractive index µ (Figure). At the centre of the jar on the bottom surface is a dot. Find the minimum diameter of a disc, such that when placed on the top surface symmetrically about the centre, the dot is invisible.
A ray of light passes from vacuum into a medium of refractive index µ, the angle of incidence is found to be twice the angle of refraction. Then the angle of incidence is ______.
