SUNITAS QUESTIONS

Question 1

Amplitude

Answer 1

Maximum displacement of medium from equilibrium

Question 2

Frequency

Answer 2

Number of wave cycles per second or waves passing point per second

Question 3

Relationship between frequency and time period

Answer 3

f = 1/T or inverse proportionality

Question 4

Time period

Answer 4

Time for one complete wave cycle

Question 5

Transverse wave

Answer 5

Displacement perpendicular to direction of wave propagation

Question 6

Coherent sources of waves

Answer 6

Same frequency and constant phase difference

Question 7

Principle of superposition

Answer 7

Two or more waves meet total displacement is the sum of the displacements individual waves

Question 8

Example of longitudinal wave

Answer 8

Sound, primary seismic waves

Question 9

Example of transverse waves

Answer 9

Waves on a plucked string, secondary seismic waves, electromagnetic radiation

Question 10

Phase difference between points quarter a wavelength apart

Answer 10

Pi/2 radians or 90’

Question 11

Phase difference between waves in anti phase

Answer 11

Pi radians or 180’

Question 12

Oscillation

Answer 12

A displacement one way then the other about an equilibrium position

Question 13

Displacement (waves)

Answer 13

Measures how far a particle is from its equilibrium point

Question 14

Propogation

Answer 14

Describes motion of a wave through a medium / space

Question 15

Define a mechanical wave

Answer 15

Requires a medium to travel in