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ICSE Prelims 2018 : Physics (Smt. Sulochanadevi Singhania School, Thane)

4 pages, 61 questions, 58 questions with responses, 80 total responses,    3    0
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LL A tte Q a u e s D t io fin e e I c d C e o m t f fo r c e n m c a s e s ta te th e o f E e n e rg a e ire le w p la in x y c h h w a n re c e s s g a F in d M iv (i) a c a r o q d is d ju a re th e a rd d a n d M o s te dyn )a b a tte r y (b n o a w u n 1 0] = by e ir e d to u h in m a c a o v e rc o m e o e re s f v e is ta lo le s s y w e a d ju e n a ra w s t th e h y? f t h e lig h t to c o m p le te t h e p a th o e c f a (ii) w a te r r t e a t(i) a ir w a te r in m o v e rc o m re e a r s o u n c e r a u e n c ie s t fr e q in e o f 2 o o o N is A a n d e ffo r t r e s is ta n c e 75% n s ta te its S u n it s D r a ,w a n e a t la b e lle d d ia g r a is in c id e n t a t a n a n g ie o f 6 o A t io u e s [2 5 u e n c ie s f re q l q a 1 n In th e b pt m ] A R K S [4 0 M O N A S E C T ity c ra h ir in t e a tio 5 ra r fa c e d a n ffic ie e in c c e r ta A Y a m o by 4 t o fhe h i h m a te o u n , w a t r ia ill w w lh g a a s 1 kg a rm re a o f te r ia l X b y 3 C a W ific h e a t c a p a c ity ? m te r s p e c a ' LT n d 1 kg hy? o f te r ia l a m F $ \ , , ; . y 10] 2 n o a n c n c e [2 5 = Q u e s t io f lig h t o y F . C D i e c d e re n e tw e e n o h m ic a n d n o n o h m ic c o n A b le v e u e s a N o t r a is r fo r m d u c to r w ith th he p e o f V g th e w e ig h t o f h is b e d b y h u m a n bo d y e s o dy h is to o n s z e ro e s D p r w o w a m a s c he a m tic d ia g th a n v (ii) t h e (i)W h a W h y e c tr o m a g n is ib le lig h t m e th o d o f d e o yo u u n d do e s a tu n td ra m o f s u c h a [2 5 = 1 0 e e ph e r t io n 3 (i) th ra o f th e fo llo w in g S ta te th e c o n d it io n fo r e a c h o l n l e f a c i t o g th e q u a l (i) a le n s h a s b o th s d in c o n ta c t h a e l c a h n e w p ( i) tw o th in le n s e s Q b tia te b e tic e te ra c d ia tio tin g th is n p la ra c e d d ia tio n e x t to th e ib le lig h t w it h fre q u e n c y m o re n ta n d b y th e s ta te n ine n t t h in g fo r k h a v e tw o p r o n g s ? e rs v is a t a t u n in g fo rk p ro d u c e s a p u re n o te ? Scanned by t F th o r lo v e s a m e ity is in c k in e e n e rg y d 4 tim e s tic e c re a s e o f bo dy a hat w h s ld b o u th e e ha c q - v g e in its n m a s s if id \b . . q d (i)w h a A e Q o 2 0 c m t io b a re a c kg ro u n n s p t is p la c e d a t a d is t a n c e o f F in d t h e p o s itio n o f im a g e b je n u e s t d r a d ia tio c o re s e n t in o in f r o c m t n o f B n u r o w o dy c o n c a v e a m le f fo o n s e n g th . q t/ n f ?g . " In t h e d ia g r a m a b a r m a n e t is w h ic h e n d o f th e s o le n. a c e n e a r a s o le n o id X Y g p a c ts a s a n o r th d b y th e s o le n o id ? e Is t h e b a r m a g n e t a tt ra c te d o r r e p e l e po a \ i t - 4 n c a Tg = q q m \ - . o ; id r, S ta te . A a n y tw q e d e m b n u m w " '" f th o a n ys n u m d a b to e r a n m ic c r e a s in d u n f in o UCleus a s s e r a e rg o e s d th e b n u m g th e b a to e r o s " a ilin g p o in t o fd y " o ic m o b n u m e c a f f X iq ra ,e f, a y c o in g to t h e 17 2 a a re 3 d 6 9 n f X f lig h t e n te r s a g la s s p r is a n d e m e rg e n t " y m a s s h o w in th n s e q u e n c e A p o w e r c ir c u it u s e s a c a b le h a v i n g t h re e d iffe re n t w ir e s (i) W h ic h tw o w ir e s a r e a t s a m e p o te n tia l O i) to w h ic h w ir e s h o u ld th e m e ta llic c a s e o f th e g e y s e r b A id u a c c o rd e r o a e a t d e w c o n n e c d jo in in g d ia g h a t is m a s s te d D ra m t h p p a th o f r a wW , A tt e Q u e s a S ta te th e c o n d itio n E x p la in g iv in g o n e e x a m (i) W h a t is fis b tio n pt m A n S E C T IO N B o y f o u r q u e s t 7 r": V s fr o m th is s e c \ t i n 5 n u c e a r w he th e n w o rk p le fi r s io n 7 N a m d e a c e o n e by fo a rc e is (i) p o h th e p s itiv e (ii) n e g a tiv e [3 ] a r tic le u s e d fo r it o [3 ] 2 Scanned by ' " : d . a c m h in e is d r iv e n b y " ly u p w a r d s in th e ) th e w o rk (ii) th e p o : (iii) th e ! Q a p (iv ) th e u e s t io . A s tr in g its fr e q u a m D a (I) p la u m o v e c e d by tr in g is p u fa rs re e e w (iii) w h a a tp t if th e h in m a c e ffic ie d b y th e lo g h 1o u In 2 . If a lo a d . o f 4 5 0 k g ls m n c y f th e m a c [T a k e g d a o h in 2 1 0 m ls = is 8 o % e [4 ] ] m m v ib ra te s w a fr e g u ith t c to e le a ra y d ia g s h o n u s e a r s fo tr in g o f rc e h ic h th e w ra d iu 12 5 s f 5 0 N fro o a n e g o fd m f24 o H H o z m tio n to s o n e u pp o rt * f th e fix o f t io n e p r is a m d d e lp < d e n p s e n [3 ] ds to in c r e a u r a n s w e r yo [4 ] s th e m a g n ific a s p e c ific la te n t h e a t o f fL s io n t h a p p e n s to th e h e a t s u p p lie d t o a s u b s ta p e r a tu r e o f th e s u b s ta n c e ' c a i l m o a (i) W h y d o fa : (ii) A w o f t h e le n s ? 7 n W h w [3 ] m o n e e v ia o y d ra m ld b e d o u th e le d b y th n s a n o e n c 13 ] u e r n e te lifte d e f e n g th 1 0 0 c m r a d iu s 1 y g e t a ffe c te d if e n g th is r e d u c e d to 7 5 c m s t io t to th e u " '" 1 0 lc u Ia te a in fa lin g th r o a s s o (iii} th e u e s n c e m C e e n c re Q in p w e r o w e r o u (ii) it is (i) N b y th e o n e . ' " tim 6 b S ta te th C d d is ta n (i) t h e C " sa m e ! J Y A v e r tic a , !o r im rm e e rs fill th e ir fie ld s w te r is m a d e o f a th in ith s h w a e e t te r w h e o f c o th e fo n ppe w h e n th e r e n c e r E x re c a s a in p is n o c ha n g e in t h e t is fr o s t 3 w hy ' c ta l c y lin d e r o f m a s s 2 0 g is h e a te d to 1 0 0 C a n d t h e n d r o p p e d In to a c a lo r im e te r o f m a s s 7 0 g c o n ta in in g 7 3 g o f w a te r a t 2 0 C th e fin a l te m p e ra tu r e o f th e m ix tu re is 2 3 C F in d th e s p e c ific h e a t c a p a c ity o f th e m e ta l IS p e c ific h e a t c a p a c ity o f c o p p e r A m e 4 0 0 J /k g C s p e c if ic h e a t c a p a c ity o f w a te r 4 2 0 0 J /k g K ] 4 qr Scanned by b (i)W h y th e a re tt in c u g e d g e o f n s c is s o r s m a d e lo n g e r th a n th e c u ttrn g d g e e o f r c l tte r (ii)E x a in g iv in g p p ro p e r re a s w hy w e u s e s in a g le fix e d p u ile ti? a lle y 3 A c s u s e q ifo h a lf m d e d fr o m ilib r iu m ? u n pe u rm e n tr e s o n e c a e n e o f w e ig h t 1 o o g f is b a a n c e d A t 3 o c m point If 8 0 g f is w h e r e s h o u ld w e s u s p e n d a w e ig h t o f 5 5 g f to b r in g it in d W 0 S ta te th a fa c to re e rs o n w h ic h t h e in te rn a r e s is ta n c e f o a c e ll d p e e n d s 3 : Q u e s t io n a S ta te b W o n e r ite re s pe (i) N 1 0 th c a m (i) re e p m o d e in ic a l u ts o s e f d i e (ii) s c ie n t ific re n c e b e tw t h e ty p e e n a n (iii) in E le c d u s tr ia l u s e tr o n a g n e t o a n f a d p ra d io is e rm a o e to p n t m e [3 ] : a g n e t : t iv e ly e u s e e o f tr a n s fo rm e r Scanned by A

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