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The size of light beam is same or different before and after refraction from a medium. If same then why we can not prove from mathematical expression. If not same why?
Doesn't look the same size to me...csirvi said:Summary:: The size of light beam is same or different before and after refraction from a medium. If same then why we can not prove from mathematical expression. If not same why?
The size of light beam is same or different before and after refraction from a medium. If same then why we can not prove from mathematical expression. If not same why?
Does it? The width of the beam is the distance along a perpendicular to the direction of travel. Look carefully at the angles that you're taking teh cosine of... are these what you want?csirvi said:then the angle of deviation is same but also width of beam after refraction changes mathematically
See width represent soze of beam yes that perpendicular to the Direction of travel.Nugatory said:Does it? The width of the beam is the distance along a perpendicular to the direction of travel. Look carefully at the angles that you're taking teh cosine of... are these what you want?
Posted the image.berkeman said:Can you post a picture or diagram of the situation you are asking about? Thanks.
berkeman said:Can you post a picture or diagram of the situation you are asking about? Thanks.
The size of a light beam can change after refraction, depending on the angle at which it enters the new medium. Generally, the light beam will become smaller when it enters a denser medium and larger when it enters a less dense medium. This is due to the change in the speed of the light as it passes through the different medium.
The change in the size of a light beam after refraction is caused by the change in the speed of the light as it passes through a different medium. This change in speed is due to the change in the density of the medium, which affects the refractive index of the medium. The greater the change in refractive index, the larger the change in the size of the light beam.
Yes, there is a formula to calculate the size of a light beam after refraction. It is known as the Snell's Law and it is given by n1sinθ1 = n2sinθ2, where n1 and n2 are the refractive indices of the two mediums, and θ1 and θ2 are the angles of incidence and refraction, respectively. This formula can be used to calculate the size of a light beam before and after refraction.
No, the size of a light beam cannot change in the same medium. Refraction occurs when light passes through different mediums with different refractive indices. In the same medium, the refractive index remains constant, therefore the size of the light beam will also remain constant. However, the direction of the light beam can change due to diffraction or scattering.
The angle of incidence has a direct effect on the size of a light beam after refraction. The greater the angle of incidence, the greater the change in direction and the smaller the size of the light beam. This is because a larger angle of incidence means the light beam has to travel a longer distance in the new medium, resulting in more refraction and a smaller size of the light beam.