Advertisements
Advertisements
प्रश्न
Which colour of light has a higher critical angle? Red light or green light.
Advertisements
उत्तर
The critical angle for 'Red' colour is higher than that of green light.
APPEARS IN
संबंधित प्रश्न
Two isosceles right-angle glass prisms P and Q are placed near each other as shown in Fig. Complete the path of the light ray entering the prism P till it emerges out of the prism Q.
If a ray of light passes from medium I to medium II without any change of direction, what can be said about the refractive indices of these media (angle I is not 0)?
Images formed by totally reflecting prisms are brighter than the image formed by ordinary reflected light, why?
Answer the following question.
Under what conditions are total internal reflection possible? Explain it with a suitable example.
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?
What are the conditions to achieve total internal reflection?
A green light is incident from the water to the air-water interface at the critical angle (θ). Select the correct statement.
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 ______.
Find the value of θ in the given figure.
