Advertisements
Advertisements
प्रश्न
Total internal reflection occurs only when a ray of light passes from a ______ medium to a ______ medium.
Advertisements
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.
Name the factors affecting the critical angle for the pair of media.
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 reflection,
Choose the correct option.
Angles of deviation for extreme colours are given for different prisms. Select the one having maximum dispersive power of its material.
Describe the construction and working of an optical fibre.
The angle of minimum deviation produced by a thin glass prism in air is 'δ'. If that prism is immersed in water, the angle of minimum deviation will be ______.
( aμg = refractive index of glass w.r.t, air aμw = refractive index of water w.r.t. air)
Optical fibre communication uses the principle of ______.
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.
