![]() Q4) Draw a diagram showing the reflection of a light ray from a plane mirror. LAW OF REFLECTION-2 THE INCIDENT RAY, REFRACTED RAY AND THE NORMAL TO THE REFLECTING SURFACE AT THE POINT OF INCIDENCE LIE ON THE SAME PLANE. In Physics, the angle of incidence can be depicted as the angle formed in between a ray propagated on a surface and the line normal to the point of occurrence on the same surface. A plane mirror reflects almost all the light that falls on it. The angle of reflection is the angle formed between the normal and the reflected laser is called angle of deflection in the normal is it is a line drawn perpendicular to the reflective surface at the point of incidence. Here, the angle between the incident ray and reflected ray is 90°. ![]() (2) One end of the cardboard tube is closed by an opaque disc (cardboard disc) having a small hole at its centre. It is given that the light ray is making 10° with the surface. Draw a ray diagram to show the path of the reflected ray corresponding to an incident ray which is directed towards the principal focus of a convex mirror. Thus, the reflected rays are also parallel to one another. The meaning of REFLECTION is an instance of reflecting especially : the return of light or sound waves from a surface. Answer: (c) 65° The meaning of ANGLE OF REFRACTION is the angle between a refracted ray and the normal drawn at the point of incidence to the interface at which refraction occurs. The entire NCERT textbook questions have been solved by best teachers for you. The critical angle is the angle of incidence for which angle of refraction is 90°. Total internal reflection is the phenomenon that involves the reflection of all the incident light off the boundary. LAW OF REFLECTION-1 The angle of incidence equals to the angle of reflection. In order to study and observe the reflection of light, we need an apparatus that can produce a thin beam of light. Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated. This just proves how important light is for our lives. Laws of Reflection The Angle of incidence ∠i is always equal to the angle of reflection ∠r (∠i =∠r). Light Class 8 Video Explanation Then the question arises how plants make food.
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