No, putting water in front of an air conditioner does not effectively humidify the air it blows. Air conditioners are designed to remove heat and moisture from the air to create a cooling effect. When the warm air passes over the cooling coils of an air conditioner, moisture in the air condenses on the coils and is drained away. This process actually dehumidifies the air, reducing its moisture content.
Placing water in front of an air conditioner would not significantly increase the humidity in the room. The airflow from the air conditioner would likely cause the water to evaporate quickly, resulting in minimal impact on the overall humidity level.
If you want to increase the humidity in a room, using a humidifier specifically designed for that purpose is a more effective solution. Humidifiers add moisture to the air by releasing water vapor, helping to increase humidity levels and improve comfort, particularly in dry environments.