Book Store

Download books and chapters from book store.
Currently only available for
CBSE Gujarat Board Haryana Board

Previous Year Papers

Download the PDF Question Papers Free for off line practice and view the Solutions online.
Currently only available for
Class 10 Class 12

વિદ્યુતપ્રવાહની ચુંબકીય અસરો

એક સમાન ચૂંબકીય ક્ષેત્રમાં એક પ્રોટોન એન એક આલ્ફા કણ સમાન વેગથી પ્રવેશ કરે છે.

bold proportional to

- કણના ભ્રમણનો આવર્તકાળ પ્રોટોનનો આવર્તકાળ .................. હશે.

કરતાં 3 ગણો
કરતાં બે ગણો
કરતાં 3 ગણો
જેટલો જ

કરતાં બે ગણો

Tips: -

bold qvB bold space bold equals bold space bold mv to the power of bold 2 over bold r bold therefore bold space bold qB bold space bold equals bold space bold mv over bold r bold space bold equals bold space bold mrω over bold r bold equals bold space bold space bold mω bold space bold equals bold space bold m fraction numerator bold 2 bold pi over denominator bold T end fraction bold therefore bold space bold T bold space bold equals bold space fraction numerator bold 2 bold πm over denominator bold qB end fraction bold comma bold space bold proportional to bold space bold કણ bold space bold માટે bold space bold T subscript bold proportional to bold space bold equals bold space fraction numerator bold 2 bold πm subscript bold proportional to over denominator bold q subscript bold proportional to bold space bold B end fraction bold અને bold space bold પ્રોટોન bold space bold માટે bold space bold T subscript bold p bold space bold equals bold space fraction numerator bold 2 bold πm subscript bold p over denominator bold q subscript bold p bold space bold B end fraction bold T subscript bold proportional to over bold T subscript bold p bold space bold equals bold space fraction numerator bold 2 bold πm subscript bold proportional to over denominator bold q subscript bold proportional to bold B end fraction bold space bold cross times bold space fraction numerator bold q subscript bold p bold space bold B over denominator bold 2 bold space bold pi bold space bold m subscript bold p end fraction bold space bold space bold space bold space bold space bold space bold space bold equals bold space fraction numerator bold 2 bold pi bold space open parentheses bold 4 bold m subscript bold p close parentheses over denominator open parentheses bold 2 bold e close parentheses bold space bold B end fraction bold space bold cross times bold space fraction numerator bold eB over denominator bold 2 bold space bold pi bold space bold m subscript bold p end fraction bold T subscript bold proportional to over bold T subscript bold p bold space bold equals bold space bold 2 bold T subscript bold proportional to bold space bold equals bold space bold 2 bold space bold T subscript bold p

થર્મોકપલમાં એક જંક્શન

bold 0 bold degree bold space bold C

તાપમાને અને બાજું જંક્શન

bold t bold space bold degree bold C

તાપમાને હોય ત્યારે ઉદભવતો

bold emf bold space bold equals bold space bold at to the power of bold 2 bold space bold minus bold space bold bt to the power of bold 3

છે. તો તટસ્થ તાપમાન કેટલું થાય ?

$bold a over bold b$
$fraction numerator bold 2 bold a over denominator bold 3 bold b end fraction$
$fraction numerator bold 3 bold a over denominator bold 2 bold b end fraction$
$fraction numerator bold b over denominator bold 2 bold a end fraction$

1.5 m લંબાઈ ધરાવતા એક સુરેખ તારમાં 10 A પ્રવાહ પસાર થાય છે. આ વાહકને 2 T તીવ્રતાવાળા ચૂંબકીય ક્ષેત્રમાં મૂકતાં તેની પર 15 N જેટલું બળ લાગે છે તો ચૂંબકીય ક્ષેત્ર અને પ્રવાહની દિશા વચ્ચેનો કોણ કેટલો મળે ?

$<pre>uncaught exception: Http Error #404 in file: /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/HttpImpl.class.php line 61 #0 [internal function]: com_wiris_plugin_impl_HttpImpl_0(Object(com_wiris_plugin_impl_HttpImpl), NULL, 'http://www.wiri...', 'Http Error #404') #1 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/php/Boot.class.php(769): call_user_func_array('com_wiris_plugi...', Array) #2 [internal function]: _hx_lambda->execute('Http Error #404') #3 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/haxe/Http.class.php(532): call_user_func_array(Array, Array) #4 [internal function]: haxe_Http_5(true, Object(com_wiris_plugin_impl_HttpImpl), Object(com_wiris_plugin_impl_HttpImpl), Array, Object(haxe_io_BytesOutput), true, 'Http Error #404') #5 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/php/Boot.class.php(769): call_user_func_array('haxe_Http_5', Array) #6 [internal function]: _hx_lambda->execute('Http Error #404') #7 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/HttpImpl.class.php(27): call_user_func_array(Array, Array) #8 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/haxe/Http.class.php(444): com_wiris_plugin_impl_HttpImpl->onError('Http Error #404') #9 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/haxe/Http.class.php(458): haxe_Http->customRequest(true, Object(haxe_io_BytesOutput), NULL, NULL) #10 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/HttpImpl.class.php(40): haxe_Http->request(true) #11 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/TextServiceImpl.class.php(80): com_wiris_plugin_impl_HttpImpl->request(true) #12 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/service.php(19): com_wiris_plugin_impl_TextServiceImpl->service('mathml2accessib...', Array) #13 {main}</pre>$
$bold 45 bold degree$
$bold 60 bold degree$
$bold 90 bold degree$

R₁ અને R₂ અવરોધો સમાંતરમાં જોડેલા છે. તેમાંથી પ્રવાહ પસાર કરતાં ઉદભવતી ઉષ્મા H₁ અને H₂ હોય તો $bold H subscript bold 1 over bold H subscript bold 2 bold space bold equals bold space bold. bold. bold. bold. bold. bold. bold. bold. bold. bold. bold. bold.$

$bold R subscript bold 2 over bold R subscript bold 1$
$bold R subscript bold 1 over bold R subscript bold 2$
$fraction numerator bold R subscript bold 1 superscript bold 2 over denominator bold R subscript bold 2 superscript bold 2 end fraction$
$fraction numerator bold R subscript bold 2 superscript bold 2 over denominator bold R subscript bold 1 superscript bold 2 end fraction$