Subject

गणित

Class

CBSEH Class 10

Pre Boards

Practice to excel and get familiar with the paper pattern and the type of questions. Check you answers with answer keys provided.

Sample Papers

Download the PDF Sample Papers Free for off line practice and view the Solutions online.
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 Multiple Choice QuestionsLong Answer Type

11.

यदि किसी समान्तर श्रेणी का mवां पद 1/n तथा nवां पद 1/m है, तो इसके प्रथम mn पदों का योग ज्ञात कीजिए। 

331 Views

12.

श्रेणी left parenthesis 4 minus begin inline style 1 over straight n end style right parenthesis space plus space left parenthesis 4 minus begin inline style 2 over straight n end style right parenthesis space plus space left parenthesis 4 minus begin inline style 3 over straight n end style right parenthesis space plus space........ के n पदों का योग ज्ञात करें। 

89 Views

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13.

यदि समीकरण left parenthesis 1 space plus space straight m squared right parenthesis straight x squared space plus space 2 mcx space plus space straight c squared space minus space straight a squared space equals space 0 के मूल समान हों तो दर्शाइए कि straight c squared space equals space straight a squared left parenthesis 1 space plus space straight m squared right parenthesis । 


द ि य ा space ह ै comma space द ् व ि घ ा त space सम ी करण space colon space left parenthesis 1 space plus space straight m squared right parenthesis straight x squared space plus space 2 mxc space plus space left parenthesis straight c squared space minus space straight a squared right parenthesis space equals space 0
द ि ए space गए space सम ी करण space क े space बर ा बर space म ू ल space ह ैं comma space इसल ि ए
straight D space equals space straight b squared space minus space 4 ac space equals space 0 space space space space space space space.................. left parenthesis 1 right parenthesis
straight a space equals space left parenthesis 1 space plus space straight m squared right parenthesis
straight b space equals space 2 mc
और space straight c space equals space left parenthesis straight c squared space minus space straight a squared right parenthesis
सम ी करण space... left parenthesis 1 right parenthesis space म ें space straight a comma space straight b comma space straight c space क ा space म ा न space रखन े space पर space
straight D space equals space left parenthesis 2 mc right parenthesis squared space minus space 4 left parenthesis 1 space plus space straight m squared right parenthesis space left parenthesis straight c squared space – space straight a squared right parenthesis space equals space 0 space
rightwards double arrow space 4 straight m squared straight c squared space minus space 4 left parenthesis straight c squared space plus space straight c squared straight m squared space minus space straight a squared space minus space straight a squared straight m squared right parenthesis space equals space 0 space
rightwards double arrow space 4 straight m squared straight c squared space minus space 4 straight c squared space minus space 4 straight c squared straight m squared space plus space 4 straight a squared space plus space 4 straight a squared straight m squared space equals space 0 space
 
rightwards double arrow space minus 4 straight c squared space plus space 4 straight a squared space plus space 4 straight a squared straight m squared space equals space 0 space
rightwards double arrow space 4 straight c squared space equals space 4 straight a squared space plus space 4 straight a squared straight m squared space
rightwards double arrow space straight c squared space equals space straight a squared space plus space straight a squared straight m squared space
rightwards double arrow space straight c squared space equals space straight a squared left parenthesis 1 space plus space straight m squared right parenthesis
सिध्द हुआ,
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14.

5 सेमी आंतरिक त्रिज्या तथा 24 सेमी ऊँचाई के एक शंक्वाकार बर्तन का begin inline style 3 over 4 end style भाग पानी से भरा है। इस पानी को 10 सेमी आंतरिक त्रिज्या के बेलनाकार बर्तन में खाली किया जाता है। बेलनाकार बर्तनों में पानी की ऊँचाई ज्ञात कीजिए। 

146 Views

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15.

दी गई आकृति में, OACB एक वृत्त, जिसका केंद्र O तथा त्रिज्या 3.5 सेमी है, का चतुर्थांश है। यदि OD = 2 सेमी हो तो छायांकित भाग का क्षेत्रफल ज्ञात कीजिए। 

159 Views

16.

O केंद्र वाले वृत्त पर एक बाह्म बिंदु T से दो स्पर्श रेखाएँ TP तथा TQ खींची गई हैं। सिध्द कीजिए कि angle space PTQ space equals space 2 angle space OPQ 

134 Views

17.

दर्शाइए कि increment ABC जहॉं straight A left parenthesis negative 2 comma space 0 right parenthesis comma space straight B left parenthesis 2 comma space 0 right parenthesis comma space straight C left parenthesis 0 comma space 2 right parenthesis तथा increment PQR जहॉं straight P left parenthesis negative 4 comma space 0 right parenthesis comma space straight Q left parenthesis 4 comma space 0 right parenthesis comma space straight R left parenthesis 0 comma space 4 right parenthesis है, समरूप त्रिभुज हैं। 

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