Sign Up Sign Up

Connect with:
Google LinkedIn
or use


Have an account? Sign In Now

Sign In Sign In

Connect with:
Google LinkedIn
or use


Forgot Password?

Don't have account, Sign Up Here

Forgot Password Forgot Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.


Have an account? Sign In Now

Sorry, you do not have a permission to ask a question, You must login to ask question.

Connect with:
Google LinkedIn
or use


Forgot Password?

Need An Account, Sign Up Here

Please briefly explain why you feel this question should be reported.

Please briefly explain why you feel this answer should be reported.

Please briefly explain why you feel this user should be reported.

Sign InSign Up

Askmemetallurgy

Askmemetallurgy Logo Askmemetallurgy Logo

Askmemetallurgy Navigation

  • MCQs
    • Metallurgical Engineering mcq
    • Topic Wise mcq
    • Numericals
  • Notes
  • GATE Papers
  • Interview
Search
Ask A Question

Mobile menu

Close
Ask a Question
  • Home
  • Categories
  • Questions
    • New Questions
    • Trending Questions
  • GATE Papers
  • Recent Posts
  • Badges
  • MCQs
    • Metallurgical Engineering mcq
    • Topic Wise mcq
    • Numericals
  • Notes
  • GATE Papers
  • Interview
Home/ Questions/Q 997
Next
In Process
Click here to check latest metallurgy jobs
Ivan
IvanCopper
Asked: April 26, 20202020-04-26T09:42:00+05:30 2020-04-26T09:42:00+05:30In: Physical Metallurgy & Heat treatment

Why metals are opaque ?

Why metals are opaque ?
question
  • 0
  • 4
  • 134
  • 0
  • 0
Answer
Share
  • Facebook

    4 Answers

    • Voted
    • Oldest
    • Recent
    1. Rohit.km Platinum Gate aspirant.
      2020-04-26T11:54:29+05:30Added an answer on April 26, 2020 at 11:54 am

      Metals have free electrons, they absorb energy of the light beam incident on them (light as photons) and don't let them pass through . So metals are opaque.

      Metals have free electrons, they absorb energy of the light beam incident on them (light as photons) and don’t let them pass through .

      So metals are opaque.

      See less
      • 1
      • Reply
      • Share
        Share
        • Share on WhatsApp
        • Share on Facebook
        • Share on LinkedIn
        • Share on Twitter
      • 1 Reply
      • Ivan Copper
        2020-04-27T10:25:19+05:30Replied to answer on April 27, 2020 at 10:25 am

        Ok I agree with you free electrons are responsible for making metals lustrous or shiny. Suppose we take two  same metals :- Case 1:-  under bulb Case 2:- under sunlight Of the above two cases where you can observe metal is more shiny appearence and why ?

        Ok I agree with you free electrons are responsible for making metals lustrous or shiny.

        Suppose we take two  same metals :-

        Case 1:-  under bulb

        Case 2:- under sunlight

        Of the above two cases where you can observe metal is more shiny appearence and why ?

        See less
        • 0
        • Reply
        • Share
          Share
          • Share on WhatsApp
          • Share on Facebook
          • Share on LinkedIn
          • Share on Twitter
    2. Raj Copper Metallurgist
      2020-04-27T01:39:39+05:30Added an answer on April 27, 2020 at 1:39 am

      Metals are opaque, because they have metallic bonding which means that all of the atoms are surrounded by free moving electrons. Therefore, any light that passes through a metal will hit one of these electrons which will absorb the light and re-emit it. The light that is re-emitted is known as refleRead more

      Metals are opaque, because they have metallic bonding which means that all of the atoms are surrounded by free moving electrons. Therefore, any light that passes through a metal will hit one of these electrons which will absorb the light and re-emit it. The light that is re-emitted is known as reflection.Hence metals are lustrous.

      See less
      • 0
      • Reply
      • Share
        Share
        • Share on WhatsApp
        • Share on Facebook
        • Share on LinkedIn
        • Share on Twitter
    3. [email protected] Platinum
      2020-04-28T13:54:06+05:30Added an answer on April 28, 2020 at 1:54 pm

      Metals are opaque because they have metallic bondings meams enough free electrons. All the atoms are surrounded by the fre moving electrons. When light comes ,an electron absorb it and re-emit it also.

      Metals are opaque because they have metallic bondings meams enough free electrons. All the atoms are surrounded by the fre moving electrons. When light comes ,an electron absorb it and re-emit it also.

      See less
      • 0
      • Reply
      • Share
        Share
        • Share on WhatsApp
        • Share on Facebook
        • Share on LinkedIn
        • Share on Twitter
    4. C Patel Metallurgy Platinum GATE Metallurgy Coaching
      2020-12-02T11:45:37+05:30Added an answer on December 2, 2020 at 11:45 am

      Electron absorb the light energy

      Electron absorb the light energy

      See less
      • 0
      • Reply
      • Share
        Share
        • Share on WhatsApp
        • Share on Facebook
        • Share on LinkedIn
        • Share on Twitter
    Leave an answer

    Leave an answer
    Cancel reply

    Connect with:
    Google LinkedIn
    Browse

    Choose from here the video type.

    Put Video ID here: https://www.youtube.com/watch?v=sdUUx5FdySs Ex: "sdUUx5FdySs".


    Sidebar

    Adv 120x240

    Related Questions

      • On: December 19, 2021
      • Answers: 0

      Dissolved oxygen content in steel

      • On: October 27, 2021
      • Answers: 2

      I need to find out Carbon's Boudouard reaction by using these 2 reaction and Hess Law

      • On: October 19, 2021
      • Answers: 0

      We are experiencing a higher Rockwell reading in a grade of 1035 steel. The heat treatment supervisor as made the statement " Ok might be a shady few coils. All ...

      • On: June 23, 2021
      • Answer: 1

      How to remove tempered embritlement ?

      • On: June 2, 2021
      • Answers: 0

      An monatomic ideal gas at 300 K has a volume of 15 liters at a pressure of 15 atm. Calculate a. The final volume of the system b. The work ...

    Stats

    • Questions 1,524
    • Answers 2,846
    • Best Answers 488
    • Users 3,922

    Top Metallurgists

    Arpita Samal

    Arpita Samal

    • 1,681 Points
    Platinum
    digbijaya igit

    digbijaya igit

    • 1,407 Points
    Platinum
    Rohit.km

    Rohit.km

    • 1,395 Points
    Platinum

    Adv 120x600

    Explore

    • Home
    • Categories
    • Questions
      • New Questions
      • Trending Questions
    • GATE Papers
    • Recent Posts
    • Badges

    Footer

    Askmemetallurgy.com

    Askmemetallurgy is the one stop solution for all the need of a Metallurgical Engineers. Askmemetallurgy provides its users with a variety of services to help meta students from semester to his career path. Learn more.

    Legal Stuff

    • Privacy Policy
    • Terms Of Use

    Help & Services

    • FAQ
    • Contact Us

    Our App

    Askmemetallurgy app     Askmemetallurgy app

    Follow Us

    Copyright © 2021 Askmemetallurgy.com, All rights reserved. Registration on or use of this site constitutes acceptance of our Privacy Policy
    DMCA.com Protection Status

    Askmemetallurgy website uses cookies to improve your experience. Cookie settingsACCEPT
    Privacy & Cookies Policy

    Privacy Overview

    This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may have an effect on your browsing experience.
    Necessary
    Always Enabled
    Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
    Non-necessary
    Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.
    SAVE & ACCEPT

    Insert/edit link

    Enter the destination URL

    Or link to existing content

      No search term specified. Showing recent items. Search or use up and down arrow keys to select an item.