# What are the laws of reflection and refraction Class 10?

(i) The angle of incidence is equal to the angle of reflection, and (ii) The incident ray, the normal to the mirror at the point of incidence and the reflected ray, all lie in the same plane. These laws of reflection are applicable to all types of reflecting surfaces including spherical surfaces.

## What are the laws of reflection class 10 physics?

The law of reflection states that the incident ray, the reflected ray, and the normal to the surface of the mirror all lie in the same plane. The angle of reflection is equal to the angle of incidence.

## What are the 3 laws of reflection?

Solution : There are three laws of reflection
1. The angle of reflection is equal to the angle of incidence .
2. The incident ray, the reflected ray and the normal lie in the same plane.

## What is 2 law of reflection?

Two laws of reflection are. (i) The angle of incidence is equal to the angle of reflection. (ii) Incident ray, reflected ray and the normal drawn at the point of incidence to the reflecting surface, lie in the same plane.

## What is mirror formula?

The relation between focal length of mirror, distance of the object and distance of the image is known as mirror formula. It is given by. u1+v1=f1.

## What are the 3 types of beams of light?

Beams of Light can be of 3 types. They are parallel, convergent and divergent.

## What are the 5 laws of reflection?

Examples of Laws of Reflection (i) Calculate the angle of incidence. (ii) Calculate the angle of reflection. (iii) Calculate the angle made by the reflected ray and the surface. (iv) Calculate the angle made by the incident and reflected rays.

## What are the two types of reflection?

The reflection of light can be roughly categorized into two types of reflection. Specular reflection is defined as light reflected from a smooth surface at a definite angle, whereas diffuse reflection is produced by rough surfaces that tend to reflect light in all directions (as illustrated in Figure 3).

## What is reflection with diagram?

The ray of light that leaves the mirror is known as the reflected ray (labeled R in the diagram). At the point of incidence where the ray strikes the mirror, a line can be drawn perpendicular to the surface of the mirror. … The angle between the reflected ray and the normal is known as the angle of reflection.

## What are the types of reflection?

Reflection is divided into three types: diffuse, specular, and glossy.

## What’s the angle of reflection?

The angle of reflection of a ray or beam is the angle measured from the reflected ray to the surface normal. From the law of reflection, , where is the angle of incidence. is measured between the ray and a line normal to the surface that intersects the surface at the same point as the ray.

## What is the 1st law of reflection?

According to the first law of reflection when a ray of light reflects off a surface, the angle of incidence is equal to the angle of reflection.

## What are the basic laws of light?

The absorbance of photon by the matter is given by an extinction coefficient and it is dependent on the wavelength λ of the photon. If a light with intensity, Io passes through a sample and the path length or thickness (d), the intensity I drops along the pathway.

## What is concave mirror?

A concave mirror has a reflective surface that is curved inward and away from the light source. Concave mirrors reflect light inward to one focal point. Unlike convex mirrors, the image formed by a concave mirror shows different image types depending on the distance between the object and the mirror.

## What causes refraction?

Change of speed causes change of direction Light refracts whenever it travels at an angle into a substance with a different refractive index (optical density). This change of direction is caused by a change in speed.

## What are the rules of refraction?

Laws of refraction state that: The incident ray refracted ray, and the normal to the interface of two media at the point of incidence all lie on the same plane. The ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant. This is also known as Snell’s law of refraction.

## What is the unit of mirror?

In a spherical mirror: The distance between the object and the pole of the mirror is called Object distance(u). The distance between the image and the pole of the mirror is called Image distance(v). The distance between the Principal focus and the pole of the mirror is called Focal Length(f).

## What is image distance?

Image Distance, s’, is the distance from a lens or mirror to an image. • Magnification, m, is the amount of size increase (or decrease) of the image as compared to the object. m = hi /ho • Images are formed by lenses and mirrors where light rays cross or focus.

## What is U and V in light chapter?

u is the object distance. v is the image distance. => magnification = height of image/height of object.

## What are the 3 properties of light?

• Light travels in a straight line.
• The speed of light is faster than sound. Light travels at a speed of 3 x 108 m/s.
• Reflection of light.

## What are light rays called?

There are many different names for light rays; however, there are three common types; incident rays, reflected rays, and refracted rays.

## What is parallel light?

Convergent, divergent and parallel beam of light Parallel beam of light: A parallel beam of light is light that is parallel to each other when coming from the source of light.

## What is example of reflection?

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.

## What is real 10th image?

A real image is defined as one that is formed when rays of light are directed in a fixed point. A real image can be projected or seen on a screen. The best example of a real image is the one formed on a cinema screen.

## What are the properties of image?

• The image obtained is virtual.
• The image is laterally inverted.
• The image is erect.
• The size of the image is the same as the size of the object.
• The distance between the image obtained from the mirror is the same as the distance between the object from the mirror.