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प्रश्न
State the laws of reflection.
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उत्तर
There are two laws of reflection.
- The angle of incidence is always equal to the angle of reflection (∠i = ∠r).
- The incident ray, the normal at the point of incidence, and the reflected ray are all on the same plane.
संबंधित प्रश्न
Describe an activity to show that the incident ray, the reflected ray and the normal at the point of incidence lie in the same plane.
Angle of incidence is equal to the angle of reflection.
What is the angle of incidence of a ray if the reflected ray is at an angle of 90° to the incident ray?
- Find out the position of the image of an object situated at A in the plane mirror.
- Can Paheli at B see this image?
- Can Boojho at C see this image?
- When Paheli moves from B to C, where does the image of A move?
Draw a diagram showing the reflection of a light ray from a plane mirror. Label on it the incident ray, the reflected ray, the normal, the angle of incidence i and the angle of reflection r.
Describe an experiment to verify the laws of reflection of light. Ans. Laws of reflection.
Reflection of light from rough surface is called ______ reflection
A student does the experiment on tracing the path of a ray of light passing through a rectangular glass slab for different angles of incidence. He can get a correct measure of the angle of incidence and the angle of emergence by following the labelling indicated in figure.
The incident angle of a ray of light is 30°. The angle between the incident ray and the reflected ray is ______.
The bouncing back of light from a surface is called ______.
