Answers for "how to check collision unity"

how to detect collision in unity

void OnCollisionEnter(Collision collision)
{
	if(collision.gameObject.tag == "yourNameOfObject")
    {
    	//This is example
        Debug.Log("Hit Object");
        //code your thing here
    }
}

check for collision unity c#

void OnCollisionEnter(Collision col) { }