How strong is an earthquake if a refrigerator moves and pictures fall off the wall?

If a refrigerator moves and pictures fall off the wall during an earthquake, it is likely to be around a magnitude of 5.0 to 6.0 on the Richter scale. At this level, the shaking is strong enough to cause noticeable effects in buildings and can be felt widely. However, the exact magnitude can vary based on the distance from the epicenter and the structural integrity of the building.