2.6 REFRACTION

Question 1

Refrection is

Answer 1

the change in speed and wavelength of light as it moves from one material to another

Question 2

Density

Answer 2

decribes how closely packed the particles in a material are

щільність

Question 3

The absolute refrective index, n, of a medium

Answer 3

is the radio of the speed of light in a vacuum to the speed of light in the medium
a number greater or equal to 1 which indicates a material’s ability to refract the light

Question 4

Shell’s Law

Answer 4

sinA1n1=sinA2n2

n air =1

Question 5

Normal is

Answer 5

a dashed line that is drawn perpendicular at 90 deg to any surface

Question 6

Angle of Incidence (охоплення)

Answer 6

the angle measured between the incident ray and the normal sinA1

Question 7

Angle of refraction

Answer 7

the angle measured between the refracted ray and the normal

Question 8

CRITICAL ANGLE

Answer 8

The angle of incidence which produces an angle of refraction of 90deg

Question 9

critical angle and total internal reflection

Answer 9

https://th.bing.com/th/id/OIP.1mJHg2ZnG9m793vzU3mXEwHaCS?pid=ImgDet&rs=1
https://image1.slideserve.com/2487240/total-internal-reflection1-l.jpg

Question 10

Total internal reflection

Answer 10

occurs at angles of incidence above the critical angle, when all the light is reflected inside the denser medium and no light escapes
n=1/sinA