14

Question 1

what is refraction

Answer 1

change in direction of waves when they travel across a boundry from one medium to another

Question 2

what is refraction about

Answer 2

change in speed

Question 3

which way does light bend when travelling from air to glass

Answer 3

towards normal

Question 4

which way does the light bend when travleing from glass to air

Answer 4

away from normal

Question 5

what is the law of reflection

Answer 5

the angle of incidence is equal to the angle of reflection

Question 6

what is specular reflection

Answer 6

when light reflects in one single direction

Question 7

what is diffuse reflection

Answer 7

the light scatters in differnt directions

Question 8

what do happens when you get mix green and blue light

Answer 8

you get cyan light

Question 9

how do you get cyan light

Answer 9

mix green and blue light

Question 10

what colours would a red filter block

Answer 10

all colouers but red

Question 11

how do light filters work

Answer 11

only let through light which it is the same colour as

Question 12

what is the focal point

Answer 12

where parallel rays coverge towards or appear to diverge from in the diagram

Question 13

what happens to light when it enters a lense

Answer 13

it slows down

Question 14

what causes light to refract

Answer 14

change in speed

Question 15

what does concave lens mean

Answer 15

all the light rays diverge

Question 16

what does a convex lense cause light to do

Answer 16

parralel rays of light converge to the focal point

Question 17

what is the equation for magnification

Answer 17

magnification=image height/object height