Advertisements
Advertisements
प्रश्न
Two prisms ABC and DBC are arranged as shown in the figure.
The critical angles for the two prisms with respect to air are 41.1° and 45° respectively. Trace the path of the ray through the combination.
उत्तर
The ray incident normally at M enters undeviated.
At E, the angle of incidence is 45°. It is greater than the critical angle. So, it is totally internally reflected.
At H, the ray is incident normally. So it enters prism BDC undeviated.
At F, the angle of incidence is 60°. It is greater than the critical angle. So, it is internally reflected.
At G, the ray is incident normally. So, it comes out from the prism undeviated.
संबंधित प्रश्न
At what angle should a ray of light be incident on the face of a prism of refracting angle 60° so that it just suffers total internal reflection at the other face? The refractive index of the material of the prism is 1.524.
A ray of light passing from air through an equilateral glass prism undergoes minimum deviation when the angle of incidence is 3/4 th of the angle of prism. Calculate the speed of light in the prism.
If a piece of paper is placed at the position of a virtual image of a strong light source, will the paper burn after sufficient time? What happens if the image is real? What happens if the image is real but the source is virtual?
Answer the following question.
Calculate the angle of emergence (e) of the ray of light incident normally on the face AC of a glass prism ABC of refractive index `sqrt(3)`. How will the angle of emergence change qualitatively, if the ray of light emerges from the prism into a liquid of refractive index 1.3 instead of air?
The refractive index of a prism whose angle A = 60° is `sqrt2`. Then the angle of minimum deviation δm will be ______.
For a glass prism `(µ = sqrt(3))` the angle of minimum deviation is equal to the angle of the prism. Find the angle of the prism.
A ray of light when incident upon a thin prism suffers a minimum deviation of 39°. If the shaded half portion of the prism is removed, then the same ray will ______.
A triangular prism of glass is shown in the figure. A ray incident normally to one face is totally internally reflected. If θ is 45°, then the index of refraction of the glass is ______.
A ray of light is refracted by a glass prism. Obtain an expression for the refractive index of the glass in terms of the angle of prism A and the angle of minimum deviation δm.
A ray of monochromatic light passes through an equilateral glass prism in such a way that the angle of incidence is equal to the angle of emergence and each of these angles is 3/4 times the angle of the prism. Determine the angle of deviation and the refractive index of the glass prism.
