waves and particle nature of light

Question 1

wavelength

Answer 1

distance between 2 troughs or 2 crests

Question 2

amplitude

Answer 2

magnitude of the maximum displacement

Question 3

period

Answer 3

time taken for one complete oscillation at one point on a wave

Question 4

frequency

Answer 4

number of complete wave cycles per second

Question 5

wave speed

Answer 5

rate of movement of wave

Question 6

wave speed =

Answer 6

frequency*wavelength

Question 7

what is a standing wave

Answer 7

when a wave is reflected with a 180 degree phase difference

Question 8

what is a node

Answer 8

points of no displacement

Question 9

what are anti-nodes

Answer 9

crest + trough, maximum displacement

Question 10

how to find the wavelength of a standing wave

Answer 10

3 nodes

Question 11

what is ave interference

Answer 11

when 2 or more waves combine to produce a resultant wave with new amplitude

Question 12

what is contrastive interference

Answer 12

when the resultant wave has a larger amplitude than any of the individual waves

Question 13

what’s destructive interference

Answer 13

when the resultant wave has a smaller amplitude than the individual waves

Question 14

waves are coherent if (2)

Answer 14

they had a constant phase difference and the same frequency