Which is refraction of light and what r the laws of refrection?

Question

Answer

The change of direction of a ray of light, sound, heat, or the like, in passing obliquely from one medium into another in which its wave velocity is different.

laws are->

1]Plane of incidence — All rays (incident, reflected, and transmitted) all lie within the same plane called the plane of incidence.

2]Snell’s law — n1sinθ1=n2sinθ2n1sin⁡θ1=n2sin⁡θ2.

3]Reflection — The angle of reflection is equal to the angle of incidence.

Answer

Refraction of light is the phenomenon of bending of light as it passes from one medium to another.

=》LAWS OF REFRACTION
1.The incident ray, the reflected ray and the normal all the point of incidence, all lie in the same plane.

2. the ratio of sin i to sign r is the constant for the light of a given colour for a given pair of mdeia. This is called snell's law.

=》n1 sin i = n2 sin r....
=》 sin i / sin r = constant....

Answer

Refraction of light :- When light travelling obliquely from one medium to another medium, the direction of propagation of light in the second medium changes.

LAWS OF REFRACTION

(i) Incident ray, refracted ray and normal ray to the interface of the two transparent media at the point of incidence, all they lie on same plane.

(ii) The ratio of sine of angle of incidence to the sine of angle of refraction is always constant.(Sin i / Sin r = Constant).

Answer

The phenomena of bouncing back of a light is called reflection !
law 1 sini =sinr
2. sin I /sin r = constant

Answer

Refraction of Light and the Laws of Refraction

Refraction of light is the bending of light as it passes from one medium to another. This phenomenon occurs due to the change in the speed of light when it travels through different mediums. The laws of refraction describe the behavior of light during this process.

Law of Refraction (Snell's Law):
The law of refraction, also known as Snell's law, states the relationship between the angle of incidence (θ1), the angle of refraction (θ2), and the refractive indices (n1 and n2) of the two mediums involved. It can be mathematically expressed as:

n1 * sin(θ1) = n2 * sin(θ2)

Where,
- n1 is the refractive index of the incident medium
- n2 is the refractive index of the refracted medium
- θ1 is the angle of incidence measured with respect to the normal
- θ2 is the angle of refraction measured with respect to the normal

Explanation of Refraction and Laws:

1. Refraction of Light:
When light travels from one medium to another with a different optical density, its speed changes, leading to the bending of light. This bending occurs because the light waves propagate at different speeds in different materials. It is important to note that the refractive index of a medium is a measure of how much the speed of light is reduced in that medium compared to its speed in a vacuum.

2. Incident and Refracted Rays:
- Incident Ray: The ray of light that falls on the boundary between two mediums is called the incident ray.
- Refracted Ray: The ray of light that continues to travel through the second medium after being bent at the boundary is called the refracted ray.

3. Normal and Angles of Incidence and Refraction:
- Normal: The line perpendicular to the surface separating the two mediums is called the normal.
- Angle of Incidence: The angle between the incident ray and the normal is known as the angle of incidence.
- Angle of Refraction: The angle between the refracted ray and the normal is known as the angle of refraction.

4. Snell's Law:
Snell's law describes the relationship between the angles of incidence and refraction and the refractive indices of the two mediums involved. According to Snell's law, the product of the refractive index and the sine of the angle of incidence is equal to the product of the refractive index and the sine of the angle of refraction.

5. Factors Affecting Refraction:
- Refractive Index: The refractive index of a medium determines how much it can bend light. Higher refractive indices result in greater bending of light.
- Wavelength: Different wavelengths of light experience different degrees of refraction. This phenomenon is known as dispersion, where different colors of light separate when passing through a prism.

6. Examples of Refraction:
- When a straw is dipped into a glass of water, it appears bent due to refraction.
- The apparent displacement of an object when viewed through a glass of water is also a result of refraction.
- The formation of a rainbow is due to the refraction and dispersion of sunlight through water droplets in the atmosphere.

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