Daguerreotypes used what material as photographic plates?

Here is the question :

DAGUERREOTYPES USED WHAT MATERIAL AS PHOTOGRAPHIC PLATES?

Here is the option for the question :

• Glass
• Copper
• Paper
• Shellac

The Answer:

And, the answer for the the question is :

Explanation:

[STC0015952]. Daguerreotypes, invented by Louis Daguerre in the 1830s, were the first effective kind of photography. The process involved applying a layer of silver iodide on a copper plate and then exposing it to light. The image was developed by exposing the plate to mercury vapours, and the plate was then fixed in a salt solution. Until the 1850s, daguerreotypes were a common way to capture a person’s likeness.