Question

What kind of detector uses a light source and light sensor that are arranged so that the rays from the light source do not hit the light sensor? When smoke particles enter the light panther, some of the light is scattered and redirected onto the sensor, causing the detector to activate an alarm.

Answer 1

A light-scattering smoke detector uses a light source and sensor arranged so that the light doesn't directly hit the sensor. When smoke enters the detector, the scattered light activates an alarm.

Step-by-step explanation:

The type of detector being described is a light-scattering smoke detector. It uses a light source and a light sensor that are arranged in such a way that the rays from the light source do not directly hit the sensor. When smoke particles enter the detector, some of the light is scattered and redirected onto the sensor, which activates the alarm.

These detectors work based on the principle of light scattering. The smoke particles act as tiny mirrors, scattering the light from the source and redirecting it towards the sensor. This change in the amount of light reaching the sensor triggers the alarm.

Light-scattering smoke detectors are commonly used in homes and buildings as a safety measure against fires. They provide early detection by sensing the presence of smoke particles in the air, allowing prompt action to be taken.