Question

what is refraction?
give examples
give laws
in brief

Answer 1

Changing of direction of light is refraction.
Incident, normal, refractive rayw lie on same plane

Answer 2

hi mate
here is your answer...
Refraction is the change in direction of wave propagation due to change in its transmission medium .the phenomenon is explained by conservation of energy and conservation of momentum...
examples ... sound waves are known as refract when travelling over water ...
laws * snell's law is a formula used to describe the relationship between the angles of incidence and Reflection when referring to light or other waves passing through a boundary between two different is tropic medium of light ,water, sound or air ...
for any two pair of media , the ratio of the sine of the angle of incidence to the sine of angle of refraction is a constant .*

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