1 fldgi

1' 3 2' 2 3' 1 4' 2 5' 3

6' 4 7' 2 8' 3 9' 2 10' 4
11' 1 12' 3 13' 2 14' 4 15' 2
16' 4 17' 4 18' 1 19' 1 20' 3
21' 4 22' 3 23' 1 24' 3 25' 3
26' 2 27' 4 28' 2 29' 1 30' 3
31' 1 32' 3 33' 2 34' 2 35' 2
36' 1 37' 3 38' 2 39' 1 40' 4
Afldgi - jHQy .; rpkd
01' A. 1' bf,lafg%dak wkaùCIh ^,' 01&
2' fiïm%;sYHdj"MERS"SARS'folla^,' 01&
3' iajik moaO;shg ^,' 01&
4' ffi,Sh ixúOdkhla fkdue;sùu $ ÔúwÔú ,CIK fmkaùu $ Ôúffi, ;=<muKla
.=Kkhùu'^,' 01&
B' 1' A, F $^ weónd"meróishï& ^,' 01&
2' D /uÿrejd' ^,' 01&
3' ma,dkafÜ^,' 01&
C. 1' a. n, >Q¾Kh ^,' 01&
b. oCIsKdj¾;j'^,'01&
c. n,fha úYd,;ajh yd n,fha l%shd f¾Ldjg we;sÿr'^,' 01&
d. lEka tflys Q ia:dkhg nrla t,a,Su u`.ska jdudj¾; n,>Q¾Kh jeä lsÍu jeks
woyila iys; ms<s;=rla' ^,' 01&
D. 1' úoHq;a iDK;dj wiudk mrudKq folla iyixhqc nkaOkhlska ne÷k úg bf,lafg%dak
wiuñ;sl j jHdma; ùfuka we;sjk iy ixhqcnkaOk fõ' ^,' 01&
2' c,fhys ;dmdxlh by<w.hla .ekSu $ c,hg by<úYsIag ;dmOdß;djlamej;Su $ whsiaj,g
jvd by< >k;ajhla c,h i;=ùu' ^,' 01&
3' c, wKqfõ ;s;a l;sr igyk yd ¨úia jHQy we| fmkajkak' ^,' 02&

;s;a l;sr igyk ¨úia jHQy uq`t ,l=Kq 15

10 fY%aKsh - úoHdj - 2020 j¾I wjidkwe.hSuniakdysr m<d; Page 1

02'
¸' Yajikh' ^,¡ 01&
¸¸' uhsfgdfldkaä%hu ^,¡ 01&
¸¸¸¡ fmdgEishï yhsfv%dlaihsâ¡ ^,¡ 01&
¸¹' Tlaiscka ^,¡ 01&
¹¡ jdhq f.da,Sh jd;fha we;s CO2 bj;a lsÍu ^,¡ 02&
¹¸' B wegjqu ^,¡ 01&
¹¸¸' yqKq Èhr ^,¡ 01&
¹¸¸¸'A isg E olajd jdhqOdrdj .,d hdug ie,eiaùu ^, 01&
ix B ys we;s Y ødjKh - yqKq Èhr lsÍmdg fkdfõ
D ys we;s Y ødjKh - yqKq Èhr lsÍmdg fõ' ^,¡ 04&
x m%f rday Kh jk uqxîc' ^,¡ 01&
xi j¾K fjkila ke;' ^,¡ 01& uq`t ,l=Kq 15

03' 1' ^,' 04&

uQ,øjH mrudKql l%udxlh fm%dafgdak .Kk bf,lafg%dak úkHdih
A 9 9 2"7
B 10 10 2"8
C 11 11 2"8"1
D 13 13 2"8"3

2' fuu uQ, øjH y;r my; i|yka wdj¾;s;d j.=fõ wod< ia:dkj, igyka lrkak' ^,' 04&

3' D2O3 ^,' 01&

4' whksl nkaOk' ^,' 01&

5' a. ^,' 02&

b. iyixhqc nkaOk ^,' 01&

c. NaE ^,' 02& uq`t ,l=Kq 15

10 fY%aKsh - úoHdj - 2020 j¾I wjidkwe.hSuniakdysr m<d; Page 2

04'
A. 1' ^,' 02&

2' n, fol úYd,;ajfhka iudk úh hq;=h'

n, fol ÈYdfjka m%;súreoaO úh hq;=h' ^,' 02&
3' W = mg^,' 01&
W = 200/1000 x 10
W=2N
4' a. ^,' 02&

b. ;ajrKh = m%fõ. fjki $ ld,h

10 ms-2 = V – 0 / 1 s
V = 10 ms-1 ^,' 01&
c. =1/2 x 1 s x 10 ms-1 = 5 m^,' 01&
5' E =mgh^,' 02&
= 0.2 kg x 10 ms-2 x 5 kg
= 10 J
B.
i. p,kh jk jia;=jl jia;=fõ ialkaOh yd m%fõ.fha .=Ks;hhs' ^,' 01&
^.uH;dj= m x v )
ii. .uH;dj= m x v ^,' 02&
= 50/1000 kg x 30 ms-1
= 1.5 kgms-1
µµµ' iEu l%shdjlg u úYd,;ajfhka iudk jQ o ÈYdfjka m%;súreoaOjQ o m%;sl%shdjla we; ^,' 01&

uq`t ,l=Kq 15
B fldgi - rpkd
05' A.
µ' uhsfgdfldkaä%hd' ^,' 01&
ii. m%Nd ixYaf,aIKh ^,' 01&
iii' P^,' 01&
iv. Tlaiscka jdhqj ^,' 01&
v' tujdhqjg ±,afjk mq<s`.= lSrla fhduq l<úg th fyd|ska ±,a fõ' ^,' 01&

10 fY%aKsh - úoHdj - 2020 j¾I wjidkwe.hSuniakdysr m<d; Page 3

B. tla tla i;a;aj ldKavj,g iqúfYaIs jQ ,CIK we;'
i. a. frda uiys; iula ±Íu$ ndysr lka fm;s ±Íu $ ia;k .%kaÓifuys iafõo .%kaÓ ±Íu' ^,' 02&
b. weksud,shd ^,' 01&
ii' isõ l=àr yDohla ±Íu $ wp,;dmS i;=ka ùu' ^,' 02&
µµµ' ieye,a¨ wiaÓ iys; wNHka;r iels,a, $ foayh wkdl+, yevhla .ekSu' ^,' 01&
iv' a. isf,kagf¾gd $ ksvdßhd'
b. wefk,Svd'
c. tlhsfkdv¾fïgd' ^,' 03&
C. i' tla Ôúmrïmrdjlska ;j;a Ôúmrïmrdjla ìyslsÍfï l%shd j,shhs' ^,' 01&
ii' uõ Ydlhg iudk ÿys;D Ydl ,nd .; yelsùu $ blaukska fndalr .; yelsùu' ^,' 02&
iii' ialkaO wdlkaO - w¾;dm,a' $ rhsfidauh - b`.=re $fldauh - lsß w,"ynr,'
n,anh - ÆKq^,' 02&
iv' ld, ;rKh l< yels ùu $ wdydr ixÑ; lsÍu' ^,' 01& uq`t ,l=Kq 20

06' A.
¸' A - NaCl whksl ±,si / B- .%e*hsâ ^ñksrx& / C - Èhuka;s' ^,' 03&
¸¸' Na+ - 2"8 ^,' 01&
¸¸¸' .,a w`.=re f,i" kefkda ;ka;= f,i^,' 01&
¸¹' 6^,' 01&
¹' Na2 O , KCl jeks iqÿiq whksl ixfhda. folla ^,' 02&
¹¸' c,Sh fyda ú,Sk ødjK ;=<ska úÿ,sh .uka lrhs' $ idudkH WIaK;ajfha È >k wjia:dfõ mj;s'
$ Ok yd iDK whk j,skaiukaú; h' $ by< øjdxl yd ;dmdxl we;' ^,' 02&
¹¸¸' B, C^,' 01&
B.
i' hlv ^Fe&$áka ^Sn&$iskala ^Zn& jeks il%Sh;d fY%aKsfha uOHia: l%shdldß;ajfhka hq;= f,day ^,'
01&
ii' ySughsÜ - Fe2 O3 ^,' 02&
iii' a. ySughsÜ $ yqKq.,a $ fldala^,' 02&
b. fldala^,' 01&
c. 6500 C muK WIaK;ajhg r;alr we;s jdhq Odrd ^,' 01&
uq`t ,l=Kq 20
d. R- f,dafndr S – øj hlv ^,' 02&

07'A. >k "øj iy jdhq u.ska we;sjk mSvkh ñksidf.a ffoksl lghq;=j, È Ndú;hg .efkhs'
1' tall j¾. M,hla u; l%shdlrk n,hhs' ^,' 01&
ii' n,h N ^,' 02&
mSvkh = ---------- = ---------- = Nm-2
j¾.M,h m2

10 fY%aKsh - úoHdj - 2020 j¾I wjidkwe.hSuniakdysr m<d; Page 4

iii' ^,' 03&

ógrhla muK È. ixjD; ùÿre k<h ri Èfhka mqrjd thg jd;h we;=`t
fkdjk fia riÈh wvx.= Ndckhl isria j hál=re j /|ùfuks'

µ¶' ^,' 03&

P = hdg
P = 72/100 m x 13600 kgm-3 x 10 ms-2

P = 97920 Pa
v' nghla Ndú;fhka îu mdkh $ ihs*k l%ufhka gexlshl we;s c,h bj;a lsÍu $ rn¾
pQIlfhys l%shdj' ^,' 01&
B. i' 1 2+3+10 15 ^,' 02&
1 1 1 1 --- = -------------- = --------------
--- = --- + --- + --- 60
R 60
R R1 R1 R1

1 1 1 1
R = 4
--- = --- + --- + ---
R 30 20 6
ii. a. r4 È. 1 m l m%;sfrdaOh = 2.5  ^,' 01&
tu ksid r4 È. 2 m l m%;sfrdaOh = 2.5  x 2 = 5
b. r5 = 20 - 5 = 15  ^,' 02&
iii' R = R1 + R2 = 20 + 4 = 24^,' 02&
iv' V = I R ^,' 03&
6 V = I x 24  , I = 6/24 = 1/4  uq`t ,l=Kq 20

08'A ¸' tlu j¾Kfoayh u; msysá iajdêk j úhqla; fkdjkcdkfõ' ^,' 02&
¸¸' ,sx. m%;s noaO cdk - ysfuda*s,shdj ^,' 02&
ffoysl j¾K foay u; - ;e,iSñhdj
¸¸¸' ^,' 02&
XC Xc x XcY

XC Xc Xc Y

XC Xc XC Y XcXc XcY
jdyl ksfrda.s frda.s frda.s
¸¹' ysfud.af,dìka ksIamdokh wvd, ùu ksid ksrla;sh we;sùu' ^,' 01&
¹' f,a kEhska w;r isÿjk újdy' ^,' 01&

10 fY%aKsh - úoHdj - 2020 j¾I wjidkwe.hSuniakdysr m<d; Page 5

¹¸' cdkúlD;s $ wiïmQ¾K m%uqL;djh' ^,' 01&
B. 1' w' úNjYla;sh ^,' 01&
wd' c, úÿ,sh ksmo ùfï È $ l=`t f.äh Ndú;fha È iqÿiq ksoiqka i|yd ^,' 02&
we' E = mgh ^,' 03&
= 3 kg x 10 ms-2 x 12 m
= 360 J
2' i' c,fha úNj Yla;sh c,fha pd,l Yla;sh ^,' 01&
ii' E = 1/2 mv2 ^,' 03&
-1 -1
E = 1/2 x 1 kg x 40 ms x 40 ms
E = 800 J
iii' c, myf¾ fõ.h jeä lsÍu' ^,' 01&
;, nUrfha j¾.M,h jeä lr jeä c, ialkaOhla .efgkak ie,eiaùu uq`t ,l=Kq 20

09'
A' µ' wdj¾;s;d j.=fõ" w' ;sriafma,s - wdj¾; ^,' 02&
wd' isriafma,s - ldKav
ii' >k wjia:dfõ mj;S' ^,' 01&
iii' m%:u whkSlrK Yla;sh wvq fõ' ^,' 02&
úoHq;a iDK ;dj wvq fõ'
µ¶' fmdgEishï Tlaihsâ NdIañlh' ^,' 02&
i,amj, Tlaihsvh wdï,slh'
v' ixhqc;d bf,lafg%dak ^,' 01&
vi' fndafrdaka ^B& $ is,slka ^Si&' ^,' 01&
vii' i,am vfhdlaihsâ $ SO2 ' ^,' 01&
B' yqud, fndaÜgqjl rEmigykla my; ±la fõ'
µ' iEu l%shdjlgu úYd,;ajfhka iudk jQo ÈYdfjka m%;súreoaO jQ o m%;s l%shdjla we;' ^,' 01&
ii' A - l%shdj' ^,' 02&
B - m%;sl%shdj'
µµµ' frdlÜgqjl p,s;fha È$ ;=jlal=jlska WKavhla ksl=;a ùfï È$ ^,' 01&
yn,a Trejla .uka lsÍfïÈ iqÿiq ksoiqka i|yd
iv' c,fhka we;sjk m%;sfrdaê n,h uev meje;aùug tys wkdl+, yevh jeo.;a fõ' ^,' 01&
C' i' jeä ^,' 01&
ii' 1 ^,' 02&
F ἀ --------
m
iii' F = ma ^,' 02&
20 N = 6 kg x a uq`t ,l=Kq 20
-2
a = 3.33 ms

10 fY%aKsh - úoHdj - 2020 j¾I wjidkwe.hSuniakdysr m<d; Page 6