Question

Explain the refraction of light​

Answer 1

Answer:

refraction is the change in direction of a wave passing from one medium to another or from a gradual change in the medium. Refraction of light is the most commonly observed phenomenon, but other waves such as sound waves and water waves also experience refraction

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Answer 2

➪ QUESTION :• EXPLAIN THE REFRACTION OF LIGHT .

Answer:

★ REFRACTION :•

When Light passes from one transparent Medium to another , it changes its speed and direction ( or bends ) . This bending of light is called REFRACTION . But , when the light falls perpendicular o the surface of tje medium , it does not change its Direction .

★ REFRACTION IN DIFFERENT MEDIUMS :•

• WHen light passes from air into water or glass , it bends towards the Normal . THE ANGLE OF INCIDENCE IS GREATER THAN THE ANGLE OF REFRACTION .

• When light passes from water or glass into air , it bends away from the normal . THE ANGLE OF REFRACTION IS GREATER THAN THE ANGLE OF INCIDENCE .

★ LAWS OF REFRACTION :•

THERE ARE TWO LAWS OF REFRACTION :•

1. The incident ray , the refracted ray and the normal at the point of incidence , all lie in the same plane .
2. The ratio of the speed of light in vacuum to its speed in another medium is always constant .

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★ IMPORTANT TERMS :•

WE CAN UNDERSTAND THE TERM REFRACTION WITH THE HELP OF THE FOLLOWING TERMS :•

➠ INCIDENT RAY :• The ray of light that travels in one medium and falls on the surface of the second medium .

➠ REFRACTED RAY :• The ray of light that changes its direction in the second medium .

➠ NORMAL :• An imaginary line , drawn perpendicularly on the surface of the medium at the point where the incident ray falls ( point of incidence ) .

➠ ANGLE OF INCIDENCE :• The angle between the normal and the incident ray . It is denoted by " i " .

➠ ANGLE OF REFRACTION :• The angle between the normal and the refracted ray . It is denoted by " r " .

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