<style>/*<link href='https://www.blogger.com/dyn-css/authorization.css?targetBlogID=5998743138896163540&zx=dc4e36d8-c837-4583-bf52-6a28848ab67a' media='none' onload='if(media!='all')media='all'' rel='stylesheet'/><noscript><link href='https://www.blogger.com/dyn-css/authorization.css?targetBlogID=5998743138896163540&zx=dc4e36d8-c837-4583-bf52-6a28848ab67a' rel='stylesheet'/></noscript>
<meta name='google-adsense-platform-account' content='ca-host-pub-1556223355139109'/>
<meta name='google-adsense-platform-domain' content='blogspot.com'/>

<!-- data-ad-client=ca-pub-4580875674534626 -->

<link rel="stylesheet" href="https://fonts.googleapis.com/css2?display=swap&family=Baloo+Da+2"></head><body>*/</style>

Class 2 | পদার্থবিজ্ঞান ২য় পত্র: অধ্যায়-১০: ডোপিং, পি-টাইপ এবং এন-টাইপ ও ব্যান্ড তত্ত্বের বেসিক

HRI Team

31 May, 2022

Add Comment

<style>/*
<script type="text/javascript" src="https://www.blogger.com/static/v1/widgets/3576124627-widgets.js"></script>
<script type='text/javascript'>
window['__wavt'] = 'AOuZoY6f68HqtU3xSHlwXI8p-k1bYbdy7Q:1726941933327';_WidgetManager._Init('//www.blogger.com/rearrange?blogID\x3d5998743138896163540','//hriwant.blogspot.com/2022/05/class-2.html','5998743138896163540');
_WidgetManager._SetDataContext([{'name': 'blog', 'data': {'blogId': '5998743138896163540', 'title': 'Hriwant | Your Study Partner', 'url': 'https://hriwant.blogspot.com/2022/05/class-2.html', 'canonicalUrl': 'https://hriwant.blogspot.com/2022/05/class-2.html', 'homepageUrl': 'https://hriwant.blogspot.com/', 'searchUrl': 'https://hriwant.blogspot.com/search', 'canonicalHomepageUrl': 'https://hriwant.blogspot.com/', 'blogspotFaviconUrl': 'https://hriwant.blogspot.com/favicon.ico', 'bloggerUrl': 'https://www.blogger.com', 'hasCustomDomain': false, 'httpsEnabled': true, 'enabledCommentProfileImages': true, 'gPlusViewType': 'FILTERED_POSTMOD', 'adultContent': false, 'analyticsAccountNumber': '', 'encoding': 'UTF-8', 'locale': 'en', 'localeUnderscoreDelimited': 'en', 'languageDirection': 'ltr', 'isPrivate': false, 'isMobile': false, 'isMobileRequest': false, 'mobileClass': '', 'isPrivateBlog': false, 'isDynamicViewsAvailable': true, 'feedLinks': '\x3clink rel\x3d\x22alternate\x22 type\x3d\x22application/atom+xml\x22 title\x3d\x22Hriwant | Your Study Partner - Atom\x22 href\x3d\x22https://hriwant.blogspot.com/feeds/posts/default\x22 /\x3e\n\x3clink rel\x3d\x22alternate\x22 type\x3d\x22application/rss+xml\x22 title\x3d\x22Hriwant | Your Study Partner - RSS\x22 href\x3d\x22https://hriwant.blogspot.com/feeds/posts/default?alt\x3drss\x22 /\x3e\n\x3clink rel\x3d\x22service.post\x22 type\x3d\x22application/atom+xml\x22 title\x3d\x22Hriwant | Your Study Partner - Atom\x22 href\x3d\x22https://www.blogger.com/feeds/5998743138896163540/posts/default\x22 /\x3e\n\n\x3clink rel\x3d\x22alternate\x22 type\x3d\x22application/atom+xml\x22 title\x3d\x22Hriwant | Your Study Partner - Atom\x22 href\x3d\x22https://hriwant.blogspot.com/feeds/8605185968352566361/comments/default\x22 /\x3e\n', 'meTag': '', 'adsenseClientId': 'ca-pub-4580875674534626', 'adsenseHostId': 'ca-host-pub-1556223355139109', 'adsenseHasAds': false, 'adsenseAutoAds': false, 'boqCommentIframeForm': true, 'loginRedirectParam': '', 'view': '', 'dynamicViewsCommentsSrc': '//www.blogblog.com/dynamicviews/4224c15c4e7c9321/js/comments.js', 'dynamicViewsScriptSrc': '//www.blogblog.com/dynamicviews/bea942728df245a5', 'plusOneApiSrc': 'https://apis.google.com/js/platform.js', 'disableGComments': true, 'interstitialAccepted': false, 'sharing': {'platforms': [{'name': 'Get link', 'key': 'link', 'shareMessage': 'Get link', 'target': ''}, {'name': 'Facebook', 'key': 'facebook', 'shareMessage': 'Share to Facebook', 'target': 'facebook'}, {'name': 'BlogThis!', 'key': 'blogThis', 'shareMessage': 'BlogThis!', 'target': 'blog'}, {'name': 'Twitter', 'key': 'twitter', 'shareMessage': 'Share to Twitter', 'target': 'twitter'}, {'name': 'Pinterest', 'key': 'pinterest', 'shareMessage': 'Share to Pinterest', 'target': 'pinterest'}, {'name': 'Email', 'key': 'email', 'shareMessage': 'Email', 'target': 'email'}], 'disableGooglePlus': true, 'googlePlusShareButtonWidth': 0, 'googlePlusBootstrap': '\x3cscript type\x3d\x22text/javascript\x22\x3ewindow.___gcfg \x3d {\x27lang\x27: \x27en\x27};\x3c/script\x3e'}, 'hasCustomJumpLinkMessage': true, 'jumpLinkMessage': 'Recent Products \xbb', 'pageType': 'item', 'postId': '8605185968352566361', 'postImageThumbnailUrl': 'https://i.ytimg.com/vi/NTt_MYSrgr0/default.jpg', 'postImageUrl': 'https://i.ytimg.com/vi/NTt_MYSrgr0/hqdefault.jpg', 'pageName': 'Class 2 | \u09aa\u09a6\u09be\u09b0\u09cd\u09a5\u09ac\u09bf\u099c\u09cd\u099e\u09be\u09a8 \u09e8\u09df \u09aa\u09a4\u09cd\u09b0: \u0985\u09a7\u09cd\u09af\u09be\u09af\u09bc-\u09e7\u09e6: \u09a1\u09cb\u09aa\u09bf\u0982, \u09aa\u09bf-\u099f\u09be\u0987\u09aa \u098f\u09ac\u0982 \u098f\u09a8-\u099f\u09be\u0987\u09aa \u0993 \u09ac\u09cd\u09af\u09be\u09a8\u09cd\u09a1 \u09a4\u09a4\u09cd\u09a4\u09cd\u09ac\u09c7\u09b0 \u09ac\u09c7\u09b8\u09bf\u0995', 'pageTitle': 'Hriwant | Your Study Partner: Class 2 | \u09aa\u09a6\u09be\u09b0\u09cd\u09a5\u09ac\u09bf\u099c\u09cd\u099e\u09be\u09a8 \u09e8\u09df \u09aa\u09a4\u09cd\u09b0: \u0985\u09a7\u09cd\u09af\u09be\u09af\u09bc-\u09e7\u09e6: \u09a1\u09cb\u09aa\u09bf\u0982, \u09aa\u09bf-\u099f\u09be\u0987\u09aa \u098f\u09ac\u0982 \u098f\u09a8-\u099f\u09be\u0987\u09aa \u0993 \u09ac\u09cd\u09af\u09be\u09a8\u09cd\u09a1 \u09a4\u09a4\u09cd\u09a4\u09cd\u09ac\u09c7\u09b0 \u09ac\u09c7\u09b8\u09bf\u0995', 'metaDescription': ''}}, {'name': 'features', 'data': {}}, {'name': 'messages', 'data': {'edit': 'Edit', 'linkCopiedToClipboard': 'Link copied to clipboard!', 'ok': 'Ok', 'postLink': 'Post Link'}}, {'name': 'template', 'data': {'name': 'custom', 'localizedName': 'Custom', 'isResponsive': true, 'isAlternateRendering': false, 'isCustom': true}}, {'name': 'view', 'data': {'classic': {'name': 'classic', 'url': '?view\x3dclassic'}, 'flipcard': {'name': 'flipcard', 'url': '?view\x3dflipcard'}, 'magazine': {'name': 'magazine', 'url': '?view\x3dmagazine'}, 'mosaic': {'name': 'mosaic', 'url': '?view\x3dmosaic'}, 'sidebar': {'name': 'sidebar', 'url': '?view\x3dsidebar'}, 'snapshot': {'name': 'snapshot', 'url': '?view\x3dsnapshot'}, 'timeslide': {'name': 'timeslide', 'url': '?view\x3dtimeslide'}, 'isMobile': false, 'title': 'Class 2 | \u09aa\u09a6\u09be\u09b0\u09cd\u09a5\u09ac\u09bf\u099c\u09cd\u099e\u09be\u09a8 \u09e8\u09df \u09aa\u09a4\u09cd\u09b0: \u0985\u09a7\u09cd\u09af\u09be\u09af\u09bc-\u09e7\u09e6: \u09a1\u09cb\u09aa\u09bf\u0982, \u09aa\u09bf-\u099f\u09be\u0987\u09aa \u098f\u09ac\u0982 \u098f\u09a8-\u099f\u09be\u0987\u09aa \u0993 \u09ac\u09cd\u09af\u09be\u09a8\u09cd\u09a1 \u09a4\u09a4\u09cd\u09a4\u09cd\u09ac\u09c7\u09b0 \u09ac\u09c7\u09b8\u09bf\u0995', 'description': 'Hriwant is an educational platform. We want to help those students who can\x27t afford paid online courses\u2014full Study in Zero Distraction and Zero Fee.', 'featuredImage': 'https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_uMtMrEx0YbKP8_tpbZSwxmNz-RJBur4444bsm9woGoy5upzYWwBqdrFCbTMJK6VfyrKpp7W741bHMz1pnqqf3NWMrnxqhq5mIS3-eVCb3BmkCc', 'url': 'https://hriwant.blogspot.com/2022/05/class-2.html', 'type': 'item', 'isSingleItem': true, 'isMultipleItems': false, 'isError': false, 'isPage': false, 'isPost': true, 'isHomepage': false, 'isArchive': false, 'isLabelSearch': false, 'postId': 8605185968352566361}}, {'name': 'widgets', 'data': [{'title': 'Hriwant | Your Study Partner (Header)', 'type': 'Header', 'sectionId': 'upload-image', 'id': 'Header1'}, {'title': 'Search Media', 'type': 'BlogSearch', 'sectionId': 'upload-image', 'id': 'BlogSearch1'}, {'title': 'Label', 'type': 'Label', 'sectionId': 'upload-image', 'id': 'Label1'}, {'title': '', 'type': 'HTML', 'sectionId': 'upload-image', 'id': 'HTML16'}, {'title': '', 'type': 'HTML', 'sectionId': 'upload-image', 'id': 'HTML5'}, {'title': '', 'type': 'HTML', 'sectionId': 'upload-image', 'id': 'HTML2'}, {'title': '', 'type': 'HTML', 'sectionId': 'upload-image', 'id': 'HTML100'}, {'title': '123', 'type': 'HTML', 'sectionId': 'upload-image', 'id': 'HTML101'}, {'title': 'Logo', 'type': 'HTML', 'sectionId': 'header-main', 'id': 'HTML10'}, {'title': 'Icons, Dark, Search', 'type': 'LinkList', 'sectionId': 'header-main', 'id': 'LinkList10'}, {'title': 'Menu', 'type': 'LinkList', 'sectionId': 'header-main', 'id': 'LinkList11'}, {'title': '#Advertisement', 'type': 'HTML', 'sectionId': 'before-blog', 'id': 'HTML11'}, {'title': 'Blog Posts', 'type': 'Blog', 'sectionId': 'blog-post', 'id': 'Blog1', 'posts': [{'id': '8605185968352566361', 'title': 'Class 2 | \u09aa\u09a6\u09be\u09b0\u09cd\u09a5\u09ac\u09bf\u099c\u09cd\u099e\u09be\u09a8 \u09e8\u09df \u09aa\u09a4\u09cd\u09b0: \u0985\u09a7\u09cd\u09af\u09be\u09af\u09bc-\u09e7\u09e6: \u09a1\u09cb\u09aa\u09bf\u0982, \u09aa\u09bf-\u099f\u09be\u0987\u09aa \u098f\u09ac\u0982 \u098f\u09a8-\u099f\u09be\u0987\u09aa \u0993 \u09ac\u09cd\u09af\u09be\u09a8\u09cd\u09a1 \u09a4\u09a4\u09cd\u09a4\u09cd\u09ac\u09c7\u09b0 \u09ac\u09c7\u09b8\u09bf\u0995', 'featuredImage': 'https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_uMtMrEx0YbKP8_tpbZSwxmNz-RJBur4444bsm9woGoy5upzYWwBqdrFCbTMJK6VfyrKpp7W741bHMz1pnqqf3NWMrnxqhq5mIS3-eVCb3BmkCc', 'showInlineAds': false}], 'headerByline': {'regionName': 'header1', 'items': [{'name': 'share', 'label': ''}, {'name': 'author', 'label': 'by'}, {'name': 'timestamp', 'label': 'd MMM, yyyy'}]}, 'footerBylines': [{'regionName': 'footer1', 'items': [{'name': 'comments', 'label': 'Comment'}]}, {'regionName': 'footer2', 'items': [{'name': 'labels', 'label': 'Tags:'}]}], 'allBylineItems': [{'name': 'share', 'label': ''}, {'name': 'author', 'label': 'by'}, {'name': 'timestamp', 'label': 'd MMM, yyyy'}, {'name': 'comments', 'label': 'Comment'}, {'name': 'labels', 'label': 'Tags:'}]}, {'title': '#Advertisement', 'type': 'HTML', 'sectionId': 'ads-post', 'id': 'HTML14'}, {'title': '#Advertisement', 'type': 'HTML', 'sectionId': 'ads-post', 'id': 'HTML1'}, {'title': '#You may also like', 'type': 'HTML', 'sectionId': 'ads-post', 'id': 'HTML15'}, {'title': 'Popular Posts', 'type': 'PopularPosts', 'sectionId': 'sidebar-static', 'id': 'PopularPosts10', 'posts': [{'title': 'Class 4 | Movement and gestures | Hasnat Shuvro | Hriwant', 'id': 7775242306802028291}, {'title': 'Class 3 | Circle', 'id': 1133491084998980809}, {'title': 'Class 2 | Cell chemistry | Hasnat Shuvro | Hriwant', 'id': 6429145285896273789}, {'title': 'Class 3 | Movement and gestures | Hasnat Shuvro | Hriwant', 'id': 6983578167835746579}, {'title': 'Class 2 | Gravity', 'id': 2308132620181641987}]}, {'title': '#Advertisement', 'type': 'HTML', 'sectionId': 'sidebar-sticky', 'id': 'HTML20'}, {'title': 'About Us', 'type': 'HTML', 'sectionId': 'footer-widget', 'id': 'HTML21'}, {'title': '', 'type': 'LinkList', 'sectionId': 'footer-widget', 'id': 'LinkList1'}, {'title': 'Follow Us', 'type': 'LinkList', 'sectionId': 'footer-widget', 'id': 'LinkList14'}, {'title': 'Copyright', 'type': 'HTML', 'sectionId': 'copyright', 'id': 'HTML23'}, {'title': 'SVG Icons', 'type': 'HTML', 'sectionId': 'jet-options', 'id': 'HTML24'}]}]);
_WidgetManager._RegisterWidget('_HeaderView', new _WidgetInfo('Header1', 'upload-image', document.getElementById('Header1'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_BlogSearchView', new _WidgetInfo('BlogSearch1', 'upload-image', document.getElementById('BlogSearch1'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LabelView', new _WidgetInfo('Label1', 'upload-image', document.getElementById('Label1'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML16', 'upload-image', document.getElementById('HTML16'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML5', 'upload-image', document.getElementById('HTML5'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML2', 'upload-image', document.getElementById('HTML2'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML100', 'upload-image', document.getElementById('HTML100'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML101', 'upload-image', document.getElementById('HTML101'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML10', 'header-main', document.getElementById('HTML10'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList10', 'header-main', document.getElementById('LinkList10'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList11', 'header-main', document.getElementById('LinkList11'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML11', 'before-blog', document.getElementById('HTML11'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_BlogView', new _WidgetInfo('Blog1', 'blog-post', document.getElementById('Blog1'), {'cmtInteractionsEnabled': false, 'lightboxEnabled': true, 'lightboxModuleUrl': 'https://www.blogger.com/static/v1/jsbin/128363787-lbx.js', 'lightboxCssUrl': 'https://www.blogger.com/static/v1/v-css/13464135-lightbox_bundle.css'}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML14', 'ads-post', document.getElementById('HTML14'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML1', 'ads-post', document.getElementById('HTML1'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML15', 'ads-post', document.getElementById('HTML15'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_PopularPostsView', new _WidgetInfo('PopularPosts10', 'sidebar-static', document.getElementById('PopularPosts10'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML20', 'sidebar-sticky', document.getElementById('HTML20'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML21', 'footer-widget', document.getElementById('HTML21'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList1', 'footer-widget', document.getElementById('LinkList1'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList14', 'footer-widget', document.getElementById('LinkList14'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML23', 'copyright', document.getElementById('HTML23'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML24', 'jet-options', document.getElementById('HTML24'), {}, 'displayModeFull'));
</script>
</body>*/</style>