3C.1 refreaction

Question 1

what is refraction

Answer 1

it is the change of the wave when a wave passes through a material, the frequency stays the same but the speed changes the direction and the wavelength of the wave governed by snells law

Question 2

what will happen if the wavefronts are directly parallel to the interference

Answer 2

they won’t change direction just the wavelength would change

Question 3

what will happen if the wavefronts arent directly parallel to the interference

Answer 3

they would change direction as the first one coming in would have a different speed causing it to bend

Question 4

what is the refractive index

Answer 4

the amount of a material can change the speed of a wave when it passes through the material from another material ie the measure of a material refractoriness

Question 5

how do we calculate the value of the refractive index

Answer 5

speed of light in a vacuum/ speed of light in the material

Question 6

what is snells law

Answer 6

n1sin∠1 = n2sin∠2 as n1 and n2 are the refractive index of both medians and the ∠1 and ∠2 is the angle each ray makes to the normal, at the point where the ray meets at the interference

Question 7

the angle to the normal will always be larger in the

Answer 7

less dense medium

Question 8

what is dispersion

Answer 8

the splitting of white light using a prison

Question 9

as white light is pointed towards a prison what would happen

Answer 9

it would split up into multiple colours with the smallest wavelength like violate would bend more