Question

E. Short answer type questions.
1. What is ray of light?
2. What is reflection of light?
3. What is a mirror?
4. What are the features of ideal mirror? 5. What is regular reflection?
6. Define incident ray and reflected ray​

Answer 1

Answer:

Solution :

Incident ray - the ray of light falling on the surface AB is called the incident ray.

Reflected ray - the incident ray bouncing back in the same medium after striking the reflecting surface is called reflected ray.

Angle of incidence - the angle form between the incident ray and the normal is the angle of incidence.

Angle of reflection - the angle formed between the normal and the reflected ray is called angle of reflection.

Normal - it is the line drawn perpendicular to the reflecting surface at the point of incidence.

Answer 2

Answer:

1) A light beam or beam of light is a directional projection of light energy radiating from a light source. Sunlight forms a light beam when filtered through media such as clouds, foliage, or windows.

2) 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. Common examples include the reflection of light, sound and water waves.

3) A mirror is an object that reflects an image. Light that bounces off a mirror will show an image of whatever is in front of it, when focused through the lens of the eye or a camera. Mirrors reverse the direction of the image in an equal yet opposite angle from which the light shines upon it.

4) An ideal mirror is defined as object having a reflecting surface so smooth that it reflect back all the light rays striking without any absorbance and emiittance.

5) Specular reflection, or regular reflection, is the mirror-like reflection of waves, such as light, from a surface.

6) Incident ray - the ray of light falling on the surface AB is called the incident ray. Reflected ray - the incident ray bouncing back in the same medium after striking the reflecting surface is called reflected ray. ... Normal - it is the line drawn perpendicular to the reflecting surface at the point of incidence.