Simple Harmonic Motion Quiz

Which of the following best describes a node in a standing wave?

• Point of maximum displacement

• Point of zero displacement

• Point of variable displacement

• Point of minimum amplitude

What is the main difference between free oscillation and forced oscillation?

• Free oscillation requires external force, forced oscillation does not

• Free oscillation occurs without energy input, forced oscillation requires periodic external force

• Free oscillation has variable frequency, forced oscillation has constant frequency

• Free oscillation only occurs in liquids, forced oscillation only in solids

What is the result when two waves of the same frequency and amplitude travel in opposite directions and interfere?

• Traveling wave

• Standing wave

• Resonance

• Diffraction

The frequency of the standing wave below is 100 Hz. What is its fundamental frequency?

• 25 Hz

• 50 Hz

• 100 Hz

• 200 Hz

What happens to the frequency of a standing wave if the length of the string is doubled, keeping all other factors constant?

• It doubles

• It halves

• It remains the same

• It becomes zero

Which of the following best describes an antinode?

• A point of zero displacement

• A point of maximum displacement

• A point where the string is fixed

• A point of minimum frequency

In a standing wave, what is the distance between two consecutive nodes?

• λ

• λ/2

• λ/4

• 2λ

If the speed of sound in air is v and the length of an open pipe is L, what is the frequency of the fundamental mode?

• v/4L

• v/2L

• v/L

• 2v/L

Which of the following is NOT a characteristic of a standing wave in a closed pipe?

• Node at the closed end

• Antinode at the open end

• Both ends are antinodes

• Only odd harmonics are present

What is formed where waves cancel each other in a standing wave?

• Antinodes

• Nodes

• Crests

• Troughs