1.

The lustre of the metals is because of

Answer» <html><body><p> Reflection of light due to the presence of free electrons</p><br/><br/><p>Lustre (or luster) is the way light interacts with the surface of a crystal, rock, or mineral. The word traces its origins back to the latin lux, meaning “light”, and generally implies radiance, gloss, or brilliance. Metals in general have high electrical conductivity, high thermal conductivity, and high density. Typically they are malleable and ductile, deforming under stress without cleaving. In terms of optical properties, metals are shiny and lustrous. Sheets of <a href="https://interviewquestions.tuteehub.com/tag/metal-1094457" style="font-weight:bold;" target="_blank" title="Click to know more about METAL">METAL</a> beyond a few micrometres in <a href="https://interviewquestions.tuteehub.com/tag/thickness-707636" style="font-weight:bold;" target="_blank" title="Click to know more about THICKNESS">THICKNESS</a> appear opaque, but gold leaf transmits <a href="https://interviewquestions.tuteehub.com/tag/green-476835" style="font-weight:bold;" target="_blank" title="Click to know more about GREEN">GREEN</a> light. Metallic (or splendant) minerals have the lustre of polished metal, and with ideal surfaces will work as a reflective surface. Examples <a href="https://interviewquestions.tuteehub.com/tag/include-11332" style="font-weight:bold;" target="_blank" title="Click to know more about INCLUDE">INCLUDE</a> galena, pyrite and magnetite.</p></body></html>


Discussion

No Comment Found

Related InterviewSolutions