A continuous series of waves having the same amplitude and wavelength

A continuous series of waves having the same amplitude and wavelength

• A. Wave train
• B. Wavefront
• C. Pulse
• D. Packet

Answer: (A)

When a source vibrates periodically with the same strength and spacing, it sends out a steady stream of identical disturbances. Each successive wave has the same amplitude and wavelength, so you get a continuous series of waves traveling together—a wave train. This contrasts with a wavefront, which is a moving surface of constant phase rather than a time sequence of identical waves. A pulse is just a single, finite disturbance, not a continuous series. A packet is a localized group of waves that carries a range of wavelengths and is confined in space, not an endless, uniform sequence.

When a source vibrates periodically with the same strength and spacing, it sends out a steady stream of identical disturbances. Each successive wave has the same amplitude and wavelength, so you get a continuous series of waves traveling together—a wave train. This contrasts with a wavefront, which is a moving surface of constant phase rather than a time sequence of identical waves. A pulse is just a single, finite disturbance, not a continuous series. A packet is a localized group of waves that carries a range of wavelengths and is confined in space, not an endless, uniform sequence.