The best description for the shape of a sinusoidal wave signal during one complete cycle is an S-shaped wave.
Why it is "S-shaped"
While the technical term is a sine wave, it is often described as "S-shaped" in a horizontal or laid-down orientation because:
It starts at zero, rises to a positive peak, returns to zero, drops to a negative peak, and returns to zero again.
This continuous, smooth oscillation creates a curve that visually mimics a stylized letter "S" on its side.
Why the other options are incorrect:
Triangular wave: This consists of straight, linear ramps that form sharp points (like a series of triangles).
Square wave: This moves instantly between two fixed levels (high and low), resulting in a "blocky" appearance.
Rectangular wave: Similar to a square wave, but the time spent at the "high" level is different from the time spent at the "low" level.
Important Questions from Oscillations & Waves
The frequency (f), wavelength (λ) and speed (v) of a sound wave are related as
The length of a simple pendulum is increased four times to its previous value while the mass is doubled. What is the ratio of the new and previous time period of the pendulum?
- Which among the following waves is not an electromagnetic wave?
- In which type of wave do particles of the medium move parallel to the direction of wave propagation?
- The interference of two identical waves moving in opposite directions produces:
