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Is incident ray parallel to the emergent ray through two glass slab of different refractive index?
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The incident ray and the emergent ray will always be?
The Incident ray, falling on the glass slab, and the Emergent ray will always be parallel to each other.
Why does a light ray incident on a rectangular glass slab immersed in any medium emerges parallel to itself?
The glass slab is rectangular and both sides of the glass slab have the same medium. The light refracts in such a way that incident and emergent rays are parallel.
What explains why a prism separate white light into the colors of the rainbow?
Different colours travel at different velocity in a glass medium. Refractive index is defined as the ratio of the velocity of light in free space to that in medium. So refractive index becomes different for different colours. Now by Snell's law the refractive index is inversely proportional to the angle of refraction. Hence different colours get deviated at different angle of refraction. So the splitting of composite white light into its constituent colours has become possible. If these again fall at a parallel surface as in the case of a glass slab the colours split would get combined back and emerge as white light. But we have prism where the two refracting surfaces are at inclined and further splitting takes place and hence dispersion.
What will happen to the parallel raysof light after falling on a convex lens and passed through the lens?
A parallel beam of light coming from an infinite source when passed through a convex lens such that the refractive index of medium is less than the refractive index of lens the light will suffer deviation and the rays will converge at a point called focus of the lens on the opposite side where the rays have been coming. The image will be highly diminished as all the rays converge at a point.
How do you disperse white light?
White light is dispersed when it passes through a medium of one refractive index into a medium of a different refractive index, such as from air to crystal. However, if the light then exits the second medium from a side parallel to the side of entry-as it would with a pane of glass-it will recombine into white light. If the sides of the second medium are not parallel, then the white light will be dispersed. The greater the angle between the sides of entry and exit, the further apart the bands of light will be. The longer the path length through the second medium, the further apart the bands of light will be, too. Additionally, the greater the difference in the refractive indices between the two media, the further apart the bands of light will be. The reason diamonds have so much "fire" is because their fractive index is so much higher than that of most other gemstones, moissanite being a notable exception.
The incident ray and the emergent ray will always be?
The Incident ray, falling on the glass slab, and the Emergent ray will always be parallel to each other.
Why emergent parallel incident ray in a glass slab?
This is because the amount of refraction taking place at the parallel faces of a glass slab is equal but opposite and since the faces are parallel the emergent ray emerges parallel to the incident ray with lateral displacement.
Why incident ray and emergent ray are parallel to each other in the refraction of light?
Because both incident ray and emergent ray have same slope.
What is a glass slab?
it is a substance made of glass having 3 dimensions and is cuboid shaped. It does not deviate the light. This means that the incident and the emergent ray are parallel. The slab only produces lateral (sideways) shift or displacement.
Why does a light ray incident on a rectangular glass slab immersed in any medium emerges parallel to itself?
The glass slab is rectangular and both sides of the glass slab have the same medium. The light refracts in such a way that incident and emergent rays are parallel.
What is glass slab?
it is a substance made of glass having 3 dimensions and is cuboid shaped. It does not deviate the light. This means that the incident and the emergent ray are parallel. The slab only produces lateral (sideways) shift or displacement.
What is the angle between a reflected and a refracted rays when a light ray is incident at 30 degrees on a parallel block of thickness 5cm and refractive index 1.5?
Light will be reflected at an angle of 30deg from the normal. We can work out the angle of refraction using the formula: n(1) sin(incident angle) = n(2) sin(refracted angle) We will assume the refractive index given is the relative refractive index n(2)/n(1). So sin(30)/1.5 = sin(r) r = 19.5 deg As the reflectedd and refracted rys are on the same side of the normal we can subtract them from 180 to get the angle between them: 180 - 19.5 - 30 = 130.5
Why should the ray emerging from the glass block come out parallel to the incident ray?
The ray comes out parallel to the incident ray because the ray has the opposite refraction as when it entered the block.
What is optical center of lens?
The optical center of the lens is a point on the axis of a lens is the point where any ray passing through this point, the incident part and the emergent part are parallel. It is important for the proper refraction of light.
What explains why a prism separate white light into the colors of the rainbow?
Different colours travel at different velocity in a glass medium. Refractive index is defined as the ratio of the velocity of light in free space to that in medium. So refractive index becomes different for different colours. Now by Snell's law the refractive index is inversely proportional to the angle of refraction. Hence different colours get deviated at different angle of refraction. So the splitting of composite white light into its constituent colours has become possible. If these again fall at a parallel surface as in the case of a glass slab the colours split would get combined back and emerge as white light. But we have prism where the two refracting surfaces are at inclined and further splitting takes place and hence dispersion.
When is the angle of incidence in the greatest?
Angle of incident is greatest when the light rays is almost parallel to the surface it hits.
What is a quadrilateral with two pairs of parallel sides-each- parallel-is-a-different length what am I?
i am aquadrilateral with 2 pairs of parallel sides. each pair of parallel sides is a different lenght. what am I ?
