12 Waves 2

Question 1

Superposition

Answer 1

When two waves overlap (superpose) they produce a single wave whose instantaneous displacement can be found using the principle of superposition of waves

Question 2

The principle of superposition

Answer 2

When two waves meet at a point the resultant displacement at that point is the sum of the displacements of the individual waves.

Question 3

Interference

Answer 3

Two progressive waves continuously pass through each other they superpose producing a resultant wave

Question 4

What is the relationship between intensity and amplitude

Answer 4

Intensity is directly proportional to amplitude ^ 2

Question 5

Coherence

Answer 5

Wave emitted from two sources having a constant phase difference they must have the same frequency

Question 6

Lambda = (ax)/D

Answer 6

Wavelength = (distance between slits x distance between 2 fringes) / distance between slits and interference pattern

Question 7

Node

Answer 7

Where displacement, amplitude and intensity are 0

Question 8

Antinode

Answer 8

Where amplitude and intensity are at its greatest

Question 9

Stationary wave

Answer 9

Made from two progressive waves with the same wavelength and ideally amplitude moving in the opposite directions and are superposed. Their net energy transfer is 0

Question 10

What phase are two particles on two different sides of a node

Answer 10

Antiphase

Question 11

Wavelength of stationary waves

Answer 11

Twice the distance between adjacent nodes

Question 12

Fundamental frequency (f0)

Answer 12

The minimum frequency of a stationary wave for a string

Question 13

Stationary waves at an open end of a tube

Answer 13

Anti node

Question 14

Stationary wave at a closed end of a tube

Answer 14

Node