Unity Fade Script

IEnumerator CorutineName(float time)
{
    for (float t = 0; t < 1; t += Time.deltaTime / time)
    {
        //For moving object to a position to another in time
        transform.position = Vector3.Lerp(beginPos, endPos, t);

        //Modifing transparency of black image (from transparent to opaque)
        selectedImage.color = new Color(0.0f,0.0f,0.0f,Mathf.Lerp(0.0f,1.0f,t));

        //Modifing transparency of canvas group (from transparent to opaque)
        canvasGroup.alpha = Mathf.Lerp(0.0f,1.0f,t);
        yield return null;
    }
}