SHM & Waves Review 2025

Front

What is Simple Harmonic Motion (SHM)?

Back

Simple Harmonic Motion (SHM) is a type of periodic motion where an object moves back and forth around an equilibrium position, with a restoring force proportional to the displacement from that position.

Front

What is the formula for the frequency of a pendulum?

Back

The frequency (f) of a pendulum is given by the formula: f = 1/(2π) * √(g/L), where g is the acceleration due to gravity and L is the length of the pendulum.

Front

What is the relationship between wave speed, frequency, and wavelength?

Back

The relationship is given by the formula: wave speed (v) = frequency (f) × wavelength (λ).

Front

Define wavelength in the context of waves.

Back

Wavelength is the distance between two consecutive points that are in phase on a wave, such as from crest to crest or trough to trough.

Front

What is the unit of frequency?

Back

The unit of frequency is Hertz (Hz), which is equivalent to one cycle per second.

Front

What are Kepler's three laws of planetary motion?

Back

1. The orbit of a planet is an ellipse with the sun at one focus. 2. A line segment joining a planet and the sun sweeps out equal areas during equal intervals of time. 3. The square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit.

Front

What is amplitude in wave motion?

Back

Amplitude is the maximum displacement of points on a wave from its rest position, indicating the wave's energy.

Front

How do you calculate the frequency of a wave if you know its speed and wavelength?

Back

Use the formula: frequency (f) = wave speed (v) / wavelength (λ).

Front

What is the significance of the restoring force in SHM?

Back

The restoring force in SHM is what brings the object back to its equilibrium position, and it is always directed towards that position.

Front

What is the difference between transverse and longitudinal waves?

Back

In transverse waves, the particle displacement is perpendicular to the direction of wave propagation (e.g., light waves). In longitudinal waves, the particle displacement is parallel to the direction of wave propagation (e.g., sound waves).