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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?
Wiki User
∙ 15y ago
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
Wiki User
∙ 15y ago
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What relationship exist between the intensity of the incident reflected and refraacted rays?
The intensity of the incident ray is equal to the sum of the intensity of the reflected ray and the refracted ray, according to the law of conservation of energy. This means that some of the incident light is reflected and some is refracted when transitioning from one medium to another. The specific ratios of reflection and refraction depend on the properties of the materials involved.
Why is light internally reflected in a raindrop?
Light is internally reflected in a raindrop because of the difference in the refractive index between air and water. When light enters the water droplet at a certain angle, it bends due to the change in medium. If the angle is just right, the light is reflected internally off the surface of the droplet and then refracted again when it exits, creating a rainbow.
How does incident light emerge from a prism?
When incident light enters a prism, it is refracted due to the change in speed as it passes from one medium to another. The different colors of light have different wavelengths, causing them to refract at slightly different angles, which results in the separation of colors and the emergence of a spectrum of light.
When light is incident on a surface at 30 degrees it is found that reflected ray and refracted ray are perpendicular to each other Find angle of refraction How?
When light is incident on a surface at 30 degrees and the reflected and refracted rays are perpendicular, it means the angles of reflection and refraction add up to 90 degrees (since they are complementary angles). Therefore, the angle of refraction can be calculated as 60 degrees by subtracting the incident angle from 90 degrees. This is based on the principle of Snell's Law, which states that the angle of incidence and angle of refraction are related through the refractive indices of the two mediums.
Prove that the angle between reflected and refracted rays is 90 degree if a ray incident from denser to rarer medium?
When a ray of light travels from a denser medium to a rarer medium, the angle of refraction is greater than the angle of incidence. The reflected ray and the refracted ray lie in the same plane as the incident ray. Using Snell's Law and the principle of reflection, we can show that the sum of the angles formed by the refracted and reflected rays with the normal is equal to 90 degrees.
How is an incident ray related to a reflected ray?
An incident ray is the ray of light that strikes a surface, while a reflected ray is the ray that bounces off the surface. The angle of incidence (formed by the incident ray and the normal) is equal to the angle of reflection (formed by the reflected ray and the normal) according to the law of reflection.
When the refracted light is bent back into the incident material is called a?
When the refracted light is bent back into the incident material, it is called total internal reflection. This occurs when the angle of incidence is greater than the critical angle, causing all the light to be reflected back into the original medium rather than refracted. Total internal reflection is the principle behind optical fibers and mirages.
Why is there a loss of intensity when light is reflected?
When light is reflected, some of it is absorbed by the reflecting surface and some is scattered in various directions, leading to a loss of intensity in the reflected light compared to the incident light. Additionally, light can also be refracted or transmitted through the surface, further reducing the overall intensity of the reflected light.
When light passes from air to glass the light may change direction due to reflection?
When light passes from air to glass, some of the light may reflect off the surface due to differences in the refractive index of the two mediums. This reflection can cause the light to change direction and possibly create glare or reflections.
What happens when a ray of light strikes a flat water surface?
When a ray of light strikes a flat water surface, some of it is reflected and some is refracted. The reflected ray follows the law of reflection and bounces off the surface at the same angle as the incident ray. The refracted ray changes direction as it enters the water due to the change in speed.
What happen when light travel through medium?
When light travels through a transparent medium it is slowed down according to the refractive index of the medium. Also if light is incident at an angle onto a surface of such a material, the light rays are bent or refracted by an angle at the boundary of the material, the angle again depending on the refractive index.
How is the critical angle related to the refractive index of a medium?
The critical angle is the angle of incidence at which light is refracted along the interface. It is related to the refractive index of the medium by the equation sin(critical angle) = 1 / refractive index. This means that the larger the refractive index of the medium, the smaller the critical angle.
