Which among the following Electronic component works with the principle of Light to Voltage conversion?

Question

Question

This question was previously asked in

RRB ALP Electronics Mechanic 23 Jan 2019 Official Paper (Shift 2)

Answer 1

The correct answer is option 4.

Solar Cell

A solar cell, or photovoltaic cell, is an electronic device that converts the energy of light directly into electricity by the photovoltaic effect.
The photovoltaic effect is a process that generates voltage or electric current in a photovoltaic cell when it is exposed to sunlight.
A solar cell is made up of two layers of silicon that are treated to let electricity flow through them when exposed to sunlight.
One layer is positively charged, the other negatively charged.
As photons enter the layers, they give up their energy to the atoms in the silicon in the form of electrons.
When photons hit the layers of silicon, electrons pass through the junction between the positive and negative layers, generating electric current.

Additional Information Rectifier circuits are used for AC to DC conversion.

Zener diode are used as voltage regulators in electronic circuits.