A tuning fork has two prongs because
(A) A balanced motion is possible
(B) Energy of the oscillation can be transferred effectively
(C) Two prongs ensure greater sound
(D) Two prongs ensure strong interference

Hint The main use of the tuning fork is that it can be used as an acoustic resonator. This tool is used to tune musical instruments. The tuning fork works by releasing a perfect wave pattern to match a musician’s instrument.

Complete step by step answer
 The oscillation energy of the fork would quickly be dissipated while holding it with hand if it would only have a single prong. Two prongs are provided in a fork so that it does affect the hand holding the fork and the oscillation does not dampen much. It protects the oscillation from damping due to the contact of the hand holding the fork. This helps the prongs to keep oscillating for longer periods of time. It does contribute to a much more balanced motion. Also, the energy of oscillation from the fork is transferred effectively. The presence of two prongs does not ensure greater sound nor do they ensure stronger interference.

Therefore, the correct answers are Option A and Option B.

Note To solve this question we should know that as the object starts to move, the elastic potential energy is converted into the kinetic energy, becoming entirely kinetic energy at the equilibrium position.