.

Kl hka;% Ndú;hg bv fokq fkd ,efí¡

(g = 10 N kg-1)
01. my; i|yka tl a lj,ska tla tallhlk s a ukskq ,nk fN!;sl rdYsh wksl=;a tajdhska ukskq ,nk fN!;l s rdYh
s g jvd fjkih
a ¡ fuu
tla lh jkqfha,
(1) eV (2) J s-1 (3) W s (4) lsf,dafjdÜ meh (5) MeV

02. my; ±lf a .

a jk iólrKh i<lkk
C
A= B+
D+ E
s ,ska LT-1 iy M0LT0 kï A, D iy E j, udk jkafka ms<sj,ska,
fuys B iy C j, udk ms<j
(1) M0L0T-1, T, LT (2) MLT0, T2, T2 (3) LT-1, MT2, MT2 (4) LT-1, T, T (5) LT -1, T-1, T-1

03. ksYp
a ,;djfhka wrUd ko s jkafka,
s yfia .=re;ajh hgf;a jefgk jia;=jl pd,l Yla;sh iudkqmd;l
(1) ÿr iy tu ÿr jeàug .; jq ld,fha .=K; s hghs¡ (2) fõ.hghs¡ (3) jegqKq ÿf¾ j¾.hghs¡
(4) jegK
q q ld,fha j¾.hghs¡ (5) jegqKq ld,hghs¡

04. tljr tlu ÈYdjlg .uka wdrïN lrk A iy B f.a m%fõ. (v) – ld, (t) m%i; a õ¡ ;;amr 22 l ld,hlg miq A
a dr rEmfha ±lf
iy B .uka l< ÿr iudk fõ kï B f.a tl
a dldr m%fõ.h X iudk jkafka,
v/m s-1
A
10
x B

0
10 18 22 t/s
-5

(1) 5 m s-1 (2) 10 m s-1 (3) 10/3 m s-1 (4) 50/11 m s-1 (5) 25/11 m s-1

05. rEmfha olajd we;s mßÈ ialkO

a h m ne.ska jQ ji;
a +ka folla w;e;j
s iá
s k ñksfila iu
q g j N%uKh úh yels mqgj
q l lerlefõ'
Tyq ialkO
a fol tlu ;sria uÜgfï ;nd .ksñka ;ud fj;g f.k tk úg N%uKh jk moO a ;sfh"a

(A) fldK
a ls .uH;dj ksh;j mj;'s (B) fldaKsl m%fõ.h jeäfõ' (C) wjiaÓ;s >¾
Q Kh jeäfõ'
fïjdhska i;H jkafka"
(1) A muK's (2) B muKs' (3) C muKs' (4) A iy C muKs' (5) A yd B muKs'

06. isria w;g my<g jeiaila we;s úg ÿïßhla ;sriaj .uka lrk úg,
(1) ÿïßhg idfmalI a j jeiafia m%fõ.h ÿïßfha m%fõ.h u; r`od fkdmj;S¡
(2) ÿïßfha yd jeiafia fõ. iudk úg ÿïßhg idfmalI a j jeiafia m%fõ.h Y=kH fõ¡
(3) jeiafia fõ.hg jvd ÿïßfha fõ.h úYd, kï ÿïßhg idfmalaIj jeiafia m%fõ.fha ;r s ig ork wdk;sh jeä fõ¡
(4) ÿïßfha m%fõ.h l=ula jj q ;a ÿïßhg idfmalaIj jeifa ia m%fõ.h jeiafia i;H m%fõ.hg jvd úYd, fõ¡
(5) tj a dfha m%fõ.j, úYd,;aj fkd±k by; lsisjla iaÓrj lj s fkdyel¡

07. ;srig 45° l fldaKhla wdk;j 20 m s-1 wdrïNl m%fõ.hlk s a lS%vlfhl= fnda,hla ,nd fohs¡ fnda,h ,nd ÿka ÈYdfõ m<uq
lvS% lhdg 60 m la wE;ska isák fojk l%Svlfhla fnd,
a h w,a,d .ekSug Èj th¡s fnd, a h ìu je§ug fmr th w,a,d .ekSug fojk
lvS% lhd Èj wd hq;= m%fõ.h jkafka,
(1) 5 m s-1 (2) 5√2 m s-1 (3) 10 m s-1 (4) 10√2 m s-1 (5) √2 m s-1

01 Mahen Jecob
08. m%laIm
s a;hlg iuìfï § tlu R ;sria mrdih ,nd .; yels m%lafIm a folla we;. tu wjia:d fofla § Wmßu Wij,a h1
a K fldK
iy h2 kï ñka kj s erÈ iïnkaOh jkafka,
(1) R = (h1h2)0.5 (2) R = (2h1h2)0.5 (3) R = 2(h1h2)0.5 (4) R = 4(h1h2)0.5 (5) 4R = (h1h2)0.5

09. ÿjk ñksfil=f.a pd,l Yla;sh, Tyqf.a il a kaOfhka wvla jk <ufhl=f.a pd,l Yla;f s hka wvls¡ ñksid ;u fõ.h 1 m s-1 j,ska
jeä l< úg Tyf q .a pd,l Yla;sh <uhdf.a pd,l Yla;h s g iudk fõ¡ ñksidf.a iy <uhdf.a uq,a fõ.hka jkqfha,
(1) (√2 + 1) m s-1, (√2 + 1) m s-1 (2) (√2 + 1) m s-1, 2(√2 + 1) m s-1 (3) (√2 - 1) m s-1, 2(√2 - 1) m s-1
(4) (√2 + 1) m s-1, 2(√2 - 1) m s-1 (5) √2 m s-1, √2 m s-1
10. tlu ir, f¾Ldjl p,kh jk jdyk foll m%fõ. – ld, (V - t) m%i; a dr A iy B u.ska ±lafõ¡ jdykj,g ms<sj,ska m1 iy m2
ialkaO we;s w;r ;;amr 3 lg miq tajd .efܡ fuu ialkO
a w;r ksjerÈ iïnkaOh jkafka

(1) m1 = 3m2 (2) 3m1 = m2 (3) 3m1 = 5m2 (4) 3m1 = 7m2 (5) 5m1 = 3m2

11. j’ksh¾ uQ, O¾uh Ndú;d lrk WmlrKhl m%Odk mßudKh ½ mm fldgia we;s w;r tjeks fldgia 19 la j’ksh¾ fldgia 20 la
q j’ksh¾ fldgil È. fuka n .=Khla kï n jkf
iu`. iumd; fõ. tu WmlrKfha l=vdu ñku a ka,
(1) 1/20 (2) 1/40 (3) 1/19 (4) 1/21 (5) 1/39

12. ialkaOh M jQ wxY=jla wrh R jQ jD;;a hl V ksh; fõ.fhka N%uKh fõ¡ f¾ähka p fldK
a l
s úia:dmkhg ,lj
a Q úg tys
(1) pd,l Yl; a sh MV2 / 4 w.hlska fjkia fõ¡ (2) fldK
a sl .uH;djh 2MVR w.hlska fjkia fõ¡
(3) f¾Çh .uH;djh 2MVR w.hlska fjkia fõ¡ (4) f¾Çh .uH;djh 2MV w.hlska fjkia fõ¡
(5) f¾Çh .uH;djh fjkia fkdfõ¡

13. my; olajd we;s iEu rEmhlu lmm a s iqug iy ieye,a¨ jk w;r ;ka;= fldgia o ieye,a¨ tajd fõ¡ olajd we;s msyà
s fï ;nd
iSrefjka uqody< úg jeäu ;ajrKhla we;s moO
a ;sh jkafka

14. rEmfha fmkajd we;s ieye,a¨ o`vqj,ska ieos moaO;sfha B yd C wxY=j, ialkO
a m ne.ska fõ¡ th iu;=,s;j ;nd .ekSu i`oyd A
wxY=fõ iAlkOa h,

(1) m (2) 3 m / 4 (3) m / 2 (4) m / 4 (5) m / 8

15. fudagrhla u.ska fhdokq ,nk n,hla ksid il a kaOh 200 kg la jQ ji;a =jla 4 m s-1 ksh; m%fõ.hlska by<g .uka lrhs¡ fudagrfha
ld¾hlI a u;djh 70 % la fõ¡ fudagrh l%hs d;aul lrùu i`oyd fudg a rhg ndyß s ka Yla;sh iemhh q = iS>%;djh jkafka,
s h;
(1) 11.4 kW (2) 7.84 kW (3) 5.49 kW (4) 4.63 kW (5) 8 kW

16. fudag¾ r:hl m%fõ.h 20 % lk

s a by< kexjQ úg th k;r lÍs u i`oyd r:h .uka l< hq;= wju ÿr jeä jk m%;sY;h jkafka,
(1) 44 % (2) 55 % (3) 60 % (4) 88 % (5) 20 %

17. 100 kW Wmßu cjhlk s a l%shd l< yels ialkaOh 1000 kg jk fudag¾ r:hlg r¿ ;sria ud¾.hl 20 m s-1 ksh; Wmßu fõ.hlska
.uka l< yel¡ tu ud¾.h ;srig 30 º la wdk; jQ úg fudg a ¾ r:hg ud¾.h by<g .uka l< yels Wmßu fõ.h jkafka, (jd;
m%;f
s rdaO fkdi<lkk
a ¡)
(1) 10 m s-1 (2) 10.7 m s-1 (3) 15 m s-1 (4) 30 m s-1 (5) 50 m s-1

18. tla dldr bksu`.la tys my; fl<jr r¿ ;sria fmdf<djla iam¾Y lrk f,i o by< fl<jr iqug isria ì;a;shla iam¾Y lrk
f,i o iSudldÍ iu;=,s;;djfha we;¡ bku a kaOh 12 kg jk w;r ì;a;h
s f.ys il s u; m%;sls%hdj 50 N fõ¡ fmdf<dj u; iïm%hqla;
m%;ls s%hdj yd fmdf<dj yd bksu. w;r iSudldß >¾IK ix.=Klh ms<j s ,ska
(1) 120 N, 5 / 7 (2) 20 N, 5 / 12 (3) 130 N, 1 / 12 (4) 130 N, 5 / 12 (5) 120 N, 5 / 12

02 Mahen Jecob
19. A iy B ÿkq foll ÿkq ksh; ms<sj,ska 1500 N m-1 iy 3000 N m-1 fõ¡ ÿkq fol fjk fjku tlu úYd,;ajh we;s n, folla
u.ska we§ mj;S¡ A iy B ÿkq fol i;= úNj Yl;
a s w;r wkm q d;h,
(1) 4 : 1 (2) 3 : 1 (3) 2 : 1 (4) 1 : 2 (5) 1 : 4

20. rEmfha mßÈ ieye,a¨ wú;kH ;ka;=jlska .eg .eiQ wiudk ialkO
a folla iqug ;,hla u; ;nd F n,hla fhdod we`o f.k hkq
,efí. túg ;k;a =fõ wd;;sh T h.

tu ila kaO fol r¿ ;,hla u; ;nd F n,hu fhdod we`o f.k .f s ha kï ta folu u; l%h s d lrk >¾IK n, f ne.ska fõ. túg
;ka;=fõ wd;;sh jkafka,
(1) T + ( m2 − m1 ) f (2) T − ( m 2 − m1 ) f (3) T + ( m1 + m 2 ) f (4) T − ( m1 + m 2 ) f (5) T
( m1 + m2 ) ( m1 + m 2 ) ( m1 − m 2 ) ( m1 − m 2 )

03 Mahen Jecob