Question

If a body oscillates with an angular frequency ‘ω’ by a constant driving force, then the oscillations are called ___________.
1. damped oscillations
2. free oscillations
3. coupled oscillations
4. forced oscillations

Answer 1

Correct Answer - Option 4 : forced oscillations

Concept:

• Forced oscillation: The oscillation in which a body oscillates under the influence of an external periodic force is known as forced oscillation.
• The external agent which exerts the periodic force is called the driver and the oscillating system under consideration is called the driver body..
• A body undergoing simple harmonic motion might tend to stop due to air friction or other reasons. 
• To make the body continue its motion under oscillations force is needed to be applied continuously. 
• So, the correct option is forced oscillations

• Damped oscillation: The oscillation of a body whose amplitude goes on decreasing with time are defined as a damped oscillation.
• Free oscillations: The oscillation of a particle with fundamental frequency under the influence of restoring force is defined as free oscillations.