State the law of refraction?

Question

Answer

1).... incidenct ray . reflected ray..and normal at a point of incidence all lie in the same plane.....
•
•
2).... the sine of the angle of incidence to the sine of angle of refraction is a constant for a given pair of media.... it is called SNEEL'S LAW.

Answer

Laws of refraction state that: The incident ray, reflected ray and the normal, to the interface of any two given mediums; all lie in the same plane.

The ratio of the sine of the angle of incidence and sine of the angle of refraction is constant in any given pair of media for electromagnetic waves of a definite frequency.

Answer

Here is the best way--

Laws of Reflection and Refraction

There are three laws which govern Reflection and Refraction. These can be very easily derived from geometry.They are: Angle of Incident Ray with Normal(i) EQUALS Reflected Ray with Normal(r).(i=r)

the principle that when a ray of light, radar pulse, or the like, is reflected from a smooth surface the angle of reflection is equal to the angle of incidence, and the incident ray, the reflected ray, and the normal to the surface at the point of incidence all lie in the same plane

Answer

Law of Refraction
The law of refraction, commonly known as Snell's Law, describes how light rays change direction when they pass from one medium to another. This phenomenon occurs due to the change in light speed as it travels through different materials.

Key Principles of Snell's Law
- Angle of Incidence: The angle between the incoming light ray and the normal (a line perpendicular to the surface at the point of incidence).
- Angle of Refraction: The angle between the refracted light ray and the normal.
- Mediums: Light travels at different speeds in different mediums (e.g., air, water, glass), affecting the angle of refraction.

Mathematical Representation
The relationship between the angle of incidence (i) and the angle of refraction (r) can be expressed mathematically as:
- n1 sin(i) = n2 sin(r)
- n1: Refractive index of the first medium.
- n2: Refractive index of the second medium.

Refractive Index
- Definition: The refractive index (n) is a measure of how much light slows down in a medium compared to its speed in vacuum.
- Formula: n = c/v, where c is the speed of light in vacuum, and v is the speed of light in the medium.

Applications of Refraction
- Optical Instruments: Lenses in glasses, cameras, and microscopes utilize refraction to focus light.
- Natural Phenomena: Rainbows and mirages are examples of light refraction in nature.
Understanding the law of refraction is essential in fields like optics, physics, and various engineering applications.

Top Courses for Class 10View all

Science Class 10

Social Studies (SST) Class 10

Mathematics (Maths) Class 10

English Grammar Advanced

English Grammar Basic

Top Courses for Class 10

Top Courses for Class 10

Suggested Free Tests

Related Content

About Class 10

Class 10 Study Material

Class 10 All Subjects

NCERT Textbook Solutions

Other Classes

Important Links

Company