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![]() When compared to the speed of light in the denser medium, the rarer medium has a faster speed. The first is a more scarce medium, whereas the second is a denser medium. The ray of light makes contact with two different mediums. The angle of incident ray and angle of refracted ray Sunlight with a 90° incidence angle is absorbed, while light with a lower angle is reflected. The angle that is formed by a ray of sunlight colliding with a line perpendicular to a surface for example, a surface directly facing the sun has an angle of incidence of 0, whereas for a surface parallel to the sun (like rays of the sun striking a horizontal rooftop) has an angle of incidence as 90°.The angle of incidence is 0, the wavefront is parallel to the surface, and the path of the ray is perpendicular, or normal, to the contact in normal incidence. When a seismic wave collides with strata, it forms an acute angle.The angle of incidence = 900 - the angle the ray of light makes with the surface.Hence, the angle of incidence and reflection are always the same, and they are in the same plane as normal. The rule of reflection states that the angle of incidence equals the reflected angle. The ray of light that is reflected back after hitting the surface is known as the reflected ray.A line that is drawn perpendicular to the point of incidence is known as a normal.The incident ray hits the surface at a point known as point of incidence with a certain angle that is called the angle of incidence. ![]() The ray of light that first hits the surface to be reflected further is known as the incident ray.When a ray of light is reflected on a surface, it reflects back at an angle equal to the angle of incidence. Check out : pdf notes of Ray Optics and Optical Instruments
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