A tuning fork of frequency is sounded near a guitar string whose natural frequency is also
PHYSICS · Single correct · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics
Problem
A tuning fork of frequency 256Hz is sounded near a guitar string whose natural frequency is also 256Hz. After a short time, which of the following is most likely to happen?
(a) The guitar string will be forced to vibrate at a slightly higher frequency than 256Hz, producing audible beats.
(b) The guitar string will start vibrating with large amplitude at 256Hz because it resonates with the tuning fork.
(c) The guitar string will stay at rest because it cannot vibrate unless it is plucked.
(d) Sound waves from the fork and the string will cancel out completely, so nothing is heard.