Page 81 - Bangladesh_classwiz_BOOK2018_rev_Neat

Gi wKQy cwiwPZ c~Y©gv‡bi Rb¨, dvsk‡bi gvb ‡ei Ki‡Z K¨vjKy‡jU‡iiI cÖ‡qvRb nq bv| ZeyI G¸‡jv wb‡P
‡`Lv‡bv n‡jv-

‡h mKj msL¨v 10 Gi NvZhy³ Zv‡`i ‡¶‡Î m~PK I gv‡bi g‡a¨ ‡h m¤úK© Zv ‡evSv Zyjbvg~jKfv‡e mnR| wKš‘

10 Gi ‡h m~P‡Ki Rb¨ GKwU gvb ‡`Iqv _v‡K Zv ‡ei Kiv wKQyUv KwVb| D`vniY¯^iƒc aiv hvK, ( ) = 10 =
6 G ‡¶‡Î m~PKwU KZ Zv ‡ei Ki‡Z n‡e|

GB mgm¨v mgvav‡bi Rb¨ GKwU c×wZ n‡Z cv‡i gv‡bi ZvwjKvi e¨envi| wb‡Pi w¯Œb¸‡jv fv‡jv K‡i ch©‡e¶Y
Ki‡j ‡evSv hv‡e ‡h, cÖwZwU w¯Œ‡bi gvb¸‡jv mgvav‡bi Lye KvQvKvwQ|

AvcvZfv‡e g‡b n‡”Q gvbwU = 0.778 I = 0.779 Gi g‡a¨ Av‡Q| djvd‡ji m~²Zv evov‡bvi Rb¨ Av‡iv
ZvwjKv ‰Zwi Kiv hv‡e| Ab¨fv‡e, gv‡bi bZyb ZvwjKv ‰Zwibv K‡i = evUb Pvcvi gva¨‡g Gi gvb evi evi
y
cwieZ©b Ki‡Z n‡e hZ¶Y bv ( ) Gi gvb 6 Gi KvQvKvwQ nq| wb‡P wKQ ch©vqµwgK D`vniY ‡`Iqv n‡jv-

K¨vjKy‡jU‡ii evUb i‡q‡Q hvi gva¨‡g `¶Zvi mv‡_ GB ai‡bi mgm¨vi mgvavb Kiv hvq| GB msL¨v 6 Gi
`kwfwËK jMvwi`‡gi gvb‡K wb‡`©k K‡i| wb‡Pi w¯Œ‡b ‡`Lv hv‡”Q 6 = 0.77815 hv cvuP `kwgK ¯’vb
10
ch©š mwVK| wb‡Pi cÖ_g w¯Œ‡bi Rb¨ qz ( ) Kx e¨envi Kiv n‡q‡Q| wØZxq w¯Œ‡b jMvwi`‡gi wfwË cÖ‡ek
Í
Kiv‡bv n‡q‡Q, G‡¶‡Î ‡hwU 10|

`kwfwËK jMvwi`‡g G‡Zv e¨vcKfv‡e e¨envi Kiv nq ‡h, wfwËi D‡jøL bv K‡iB ïaygvÎ wn‡m‡eB GwU

cwiwPZ| K¨vjKy‡jU‡iI GKB c×wZ e¨envi Kiv n‡q‡Q| Dc‡ii cÖ_g w¯Œ‡b qz (g) e¨envi K‡i
`kwfwËK mivmwi cÖ‡ek Kiv‡bv n‡q‡Q|

‡Kv‡bv msL¨vi jMvwi`g n‡jv H msL¨vwU cvIqvi Rb¨ `‡ki ‡h m~PK e¨envi Ki‡Z n‡e Zvi gvb| wb‡Pi cÖ_g
w¯Œ‡b ‡`Lv hv‡”Q ‡h, Dc‡ii gv‡bi ZvwjKv n‡Z cÖvß . 77815 gvbwU 6 Gi Rb¨ fv‡jv Abygvb| gv‡Si w¯Œb
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