Light Sensor

What is a light sensor ?

• It is a photoelectric device that converts light energy (photons) detected to electrical energy (electrons)

• It is an electronic device that measures and detects infrared radiation in its surrounding environment

• An ultrasonic sensor is an electronic device that measures the distance of a target object by emitting ultrasonic sound waves, and converts the reflected sound into an electrical signal

• None of them

What is the application of a light sensor?

• Mobile Screens

• Agriculture

• Security alarm system

• All of them

What is electric current?

• It is a stream of charged particles

• It is a photoelectric device that converts light energy (photons) detected to electrical energy (electrons

• Both of them

• None of them

What is the unit of light intensity?

• lumen (lux)

• Ampe (A)

• Volt (V)

• None of them

The structure of light sensor includes:

• P-N junction

• P-O junction

• N-P junction

• None of them

P is acronym for ......

• Positive

• Photon

• Proton

• None of them

N is acronym for ......

• Negative

• Neutron

• Neural

• None

What is the instrument used to measure light intensity?

• Light sensor

• IR sensor

• Ultrasonic sensor

• Line following sensor

Panda shows the light intensity value, which mode you will choose

• Upload

• Live

• Both of them

• None of them

If you want to program light sensor, which block you will choose

• sensing

• My blocks

• show

• look