Introduction to Stationary Waves

What happens when a wave pulse propagates towards a fixed end?

• The pulse gets inverted

• The pulse gets reflected

• The pulse disappears

• The pulse continues to propagate

What are the points on a stationary wave that appear to be motionless called?

• Antinodes

• Nodes

• Crests

• Troughs

What is the name of the stationary wave pattern with two antinodes?

• First harmonic

• Second harmonic

• Third harmonic

• Fourth harmonic

How many nodes and antinodes are there in the stationary wave pattern with two antinodes?

• 2 nodes, 1 antinode

• 1 node, 2 antinodes

• 3 nodes, 2 antinodes

• 2 nodes, 3 antinodes

What is the shortest length of time for the stationary wave pattern to go from its initial configuration to looking completely horizontal?

• 0.15 seconds

• 0.30 seconds

• 0.60 seconds

• 1.20 seconds

What is the principle that explains what happens when two waves or wave pulses meet?

• Principle of superposition

• Principle of reflection

• Principle of interference

• Principle of refraction

What is the amplitude of the reflected wave in the reflection of progressive waves?

• Smaller than the incident wave

• Larger than the incident wave

• Equal to the incident wave

• Depends on the frequency

What are the points of maximum displacement in a stationary wave called?

• Antinodes

• Nodes

• Crests

• Troughs

What is the frequency of the third harmonic pattern?

• 0.84 hertz

• 1.26 hertz

• 1.50 hertz

• 2.00 hertz

What is the name of the stationary wave pattern with three antinodes?

• First harmonic

• Second harmonic

• Third harmonic

• Fourth harmonic