Solution:
The unit for light intensity is lux, and is used to indicate the intensity of light and the extent to which the surface of an object is illuminated.
Common 7 W LED bulbs have a light intensity of about 200–300 lux at a distance of 1.5 m. The typical ambient light intensity of an office is about 320–500 lux. In summer, the light intensity of direct sunlight can be as high as 100，000 lux.
The unit for light intensity is lux, and is used to indicate the intensity of light and the extent to which the surface of an object is illuminated.
Common 7 W LED bulbs have a light intensity of about 200–300 lux at a distance of 1.5 m. The typical ambient light intensity of an office is about 320–500 lux. In summer, the light intensity of direct sunlight can be as high as 100，000 lux.