Function to Animate the object in Unity (in sinewave animation)

SineWaveAnimation.cs

using UnityEngine;

public class SineWaveAnimation : MonoBehaviour {
  public float baseSize = 1f;

  void Update() {
    float animation = baseSize + Mathf.Sin(Time.time * 8f) * baseSize / 7f;
    transform.localScale = Vector3.one * animation;
  }
}