M4- C12 Flashcards
1
Q
Principle of superposition
A
When two waves meet at a point the resultant displacement is the sum of the displacements of individual waves
2
Q
Interference
A
When 2 wave superpose to produce a resultant wave with a displacement equal to the sun of the individual displacements from 2 waves
3
Q
Constructive interference
A
Max displacement
Even half no of wavelengths
4
Q
Destructive interference
A
No displacement
Odd no of half wavelengths
5
Q
Coherent
A
Constant phase difference and same frequency
6
Q
Path difference
A
Maxima and Minima
7
Q
Stationary wave
A
No net transfer of energy
Node and antibodies
8
Q
Progressive wave
A
E= in direction of wave WL= 2 adjacent points PD= changes across cycle A= all parts have same amplitude
9
Q
Stationary wave
A
E= none WL= 2x distance between nodes PD= all in phase / anti phase A= max at antinode
10
Q
Fundamental frequency
A
Lowest frequency of which an object can vibrate at
