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Understanding Displacement-distance and Displacement-Time Graphs of a Longitudinal Wave
For sound waves, the information can be represented on three graphs. Namely: Pressure-distance, Displacement-Distance and Displacement-Time graphs. Since sound waves consist of a series of compressions (high pressure) and rarefactions (low pressure), these information can be represented on a pressure-distance graph. For a displacement-distance graph, you can get the (1) amplitude and (2) wavelength of the sound waves. For a displacment-time graph, you can get the (1) amplitud
Evan Toh
Sep 211 min read


Understanding Displacement-Distance and Displacement-Time graphs of a Transverse wave
A transverse wave that you see, e.g. a water wave, can be represented on a displacement-distance(position) graph and a displacement-time graph. The two physical quantities you can determine from the displacement-distance(position) graph are: 1) amplitude, and 2) wavelength The two physical quantities you can determine from the displacement-time graph are: 1) amplitude, and 2) period Displacement-distance graph actually represents the real transverse wave. It shows the particl
Evan Toh
Sep 181 min read


Which displacement-time graph shows the particle X?
Answer: Option C
Evan Toh
Aug 171 min read


Evan Toh
Jul 141 min read


Various graphs of a simple pendulum and vertical oscillating object
As the reference height is at B, so above that reference height is considered positive, and below the reference height it is considered negative. Hence the height-time graph is as such. Consider a vertical oscillating object, similar to the simple pendulum, the middle is the fastest.
Evan Toh
Nov 5, 20251 min read


Water wave - Find the speed of water wave in the shallow region
Answer: Option A Once the water wave is produced, frequency of the wave remains constant even when it travels from deep to shallow or...
Evan Toh
Jul 30, 20251 min read


Which statements about water wave are not correct?
Answer: Option B Refer to the video explanation
Evan Toh
Jul 30, 20251 min read


Wavefront with point X and Y on trough and crest respectively
Answer: Option B Wavefront is an imaginary line that joins all identical adjacent points that are in phase. So if you assume the circular...
Evan Toh
Jul 6, 20251 min read


What happens to frequency and speed of water wave as it goes to shallow region? 2019PPp1q23
Once the wave is produced, the frequency remains constant. Hence speed V of the wave is directly proportional to the wavelength of the...
Evan Toh
Nov 4, 20241 min read


Evan Toh
Jan 1, 20240 min read


Evan Toh
Jan 1, 20240 min read


Graphs of Transverse Wave
Transverse waves are waves in which travel perpendicular to the direction of vibration of particles.
Evan Toh
Jan 1, 20241 min read


Which is a possible displacement-time graph for particle Y?
Answer: Option D
Evan Toh
Jan 1, 20241 min read


Using Slinky Coil to demonstrate Transverse and Longitudinal Waves
Though slinky coil is commonly used to demonstrate transverse and longitudinal waves, you must not quote it as an example for either of...
Evan Toh
Jan 1, 20241 min read


Evan Toh
Jan 1, 20240 min read


How to show wavefronts in a ripple tank
Wavefront is an imaginary line which joins all identical adjacent points (e.g. crests) in phase . Note that the distance between two...
Evan Toh
Jan 1, 20241 min read


Determine the motion of the particles on transverse wave
Instead of imaging how the particles will move and guess their motion, there is a technique which can help you to determine that. In...
Evan Toh
Jan 1, 20241 min read


2017PurePhyP2Q5 Two points on the rope wave with displacement-time graphs given
In this this question, the displacement-time graphs are given, which are different from displacement-distance graphs. In the...
Evan Toh
Jan 1, 20241 min read


Evan Toh
Jan 1, 20240 min read


Oscillating or Vibrating Object in a Wave Motion
When an object is oscillating or vibrating in a wave motion , the speed of the object varies along the path. In this video, there are...
Evan Toh
Jan 1, 20241 min read
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