Match List - I with List - II.

List - I		List - II
(Electronic device)		(Use/Application)
(A)	Photo diode	(I)	Remote controls
(B)	Zener diode	(II)	Amplifier
(C)	Light emitting diode	(III)	Voltage regulator
(D)	Transistor	(IV)	Photodetector

Choose the correct answer from the options given below :

Concept:

Photodiode:

• A photo diode is a semiconductor device that converts light into electrical current.
• It is commonly used in remote controls to detect signals from an infrared (IR) .

Zener Diode:

• A Zener diode is a type of diode that is designed to operate in the reverse breakdown region of its voltage-current characteristic curve. This makes it useful as a voltage regulator, maintaining a constant voltage across a load even as the input voltage varies.

LED:

• A Light Emitting Diode (LED) is a semiconductor device that emits light when a current is passed through it. It is commonly used as an indicator light in electronic devices.

Transistor:

• A transistor is a semiconductor device that can be used as an amplifier or a switch. It is commonly used as an amplifier to amplify weak signals or as a switch to control the flow of current in electronic circuits.

A - IV
B - III
C - I
D - II

The correct answer is option (2)