Question

what is resonance?​

Answer 1

$\huge\bold\red{Hey!}$

Resonance is a phenomenon in which a vibrating system drives another system to oscillate with greater amplitude at specific frequencies.

Answer 2

Resonance is defined as a phenomenon, when the frequency of an applied external force is equal to the natural frequency of the body on which the force is applied such that it readily takes up the vibrations and begins to vibrate with an increased amplitude..