In the Leviathan telescope in Ireland, a concave mirror of focal length 3.0 m is used. If an image of height 80 cm is formed at a distance of 4.0 m, then the object height, object distance and magnification are (the object is placed in front of the mirror):
1
2.4 m, 12 m and \(\frac{1}{2}\) respectively
2
2.4 m, 12 m and \(\frac{1}{3}\) respectively
3
1.2 m, 12 m and \(\frac{1}{3}\) respectively
4
2.4 m, 6 m and \(\frac{1}{3}\) respectively