Q. The term 'syzygy' is referred to when the: [IAS 2004] (Solved)
1. Earth is at perihelion and moon at perigee
2. Earth is at apehelion and moon at apogee
3. Moon and sun are at right angles with reference to the earth
4. Moon, sun and earth lie along a straight line
- d. Moon, sun and earth lie along a straight line