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ICSE Board Exam 2018 : Physics

10 pages, 90 questions, 71 questions with responses, 90 total responses,    4    0
Aayush Paurana
St. John's Universal School, Mumbai
10th Science
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' " 5 ' 1 (i) (c ) t e proided ' " ls A tte m p t u e s tio n g d in th e S E C T IO N I (4 0 M Q h , p . pe , a e n s io n s o s pei to th e m f th e le v e r , if th e lo a d is s h ifte d to c h a n ic a l a d v c o n s is ts o an ta g e o f th e le v w a rd s e r? f 1 0 p r in te d p a g e T u rn ov er r e s e r v d Scanned by (i) W h y is th e in ra tio o Y W n y is th e c irc u l? 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R e d lig h t o r G re e n lig h t lo o k s . w hit g s ta te m e n ts . ? . - - is tru e ? 11. a - v u ' " a f l (V T 18 52 1 2 Scanned by r , t h e fo llo w i i 6 o o , 3 o , 9 o g la s s p r is m o f c r tic a l a n g le 4 2 n g d ia r g a m s ho w s a C o p th th o f in c id e n t ra y A B e m e r g in g o u t o f th e y e d ia r a g m a n d c o m p le te th e p a P r is m m a r k in h s u r fa c e e o f in c d e n c e o n e a c g th e a n g i : L Q u e s tio n , la c e m m e d iu m y , e n t d is ta o so u n (i) A m (ii) W v e le n g th s d o so u n d w av es A an d B , tr a v e llin g in a in th e d ia g r a m b e lo w w av e s an th r e e r e s is to r s o th a t th e to ta l r e s is ta n c e ra w a d ia g r a m fo C a lc u la te th e T 18 5 2 1 f tw d com D is ta n ( c cm ) p a r e th e r p litu d e s v e D o T ) S tu d y th e tw g ra p h n ce a re a s s h o w n . (i) Z 3 (a ) t7 1 q e is r f v a lu e s 2 0 m o re th e , 30 an d 50 H ow w ill y o u jo in th e m [2 ] so th a n 7 0 ? a rr a n ge m en t q u iv a le n t r e s is ta n c e 3 T u fn O v er Scanned by a O i) N t do u c le a r W yo po p la n ts w er h a t is th e a dv an W ' n y do ta g e o f p r o da m p e d o w 0) (ii) la te d O n w w fa o v ib , a i" v ity b y fu s io e le c tr ic f. " ib ra tin g b o d y e le c tr ic tio n to p r o d u c e re a n n r e a c tio n B ? tin u o u s co n ity ? ly d e c r e a s e D u n g ib ra tio n s ? v is th e r d u c in g d b y fr e e th e a m p litu d e es f s s io ea r u se n u c t d o y o u u n d e r s ta n O i) s io n 7 b y th e te rm n u c le a r fu ile rs ta n d u u n f e m ith th e n u m o p r im A c ro s s fcu f tu m a ry a n d d a ry se c o n ber o rr e n t d o tr a n s fo rm e r s w ils o f [2 ] tr a n s fo n n e r a L L f c o il in th e m ? s o co o rk ? L 7 Q u e s tio n 4 (a ) (i) n te m p e ra tu r e in d e r e g a e C e ls iu s be c o n v e r te d in to S I u n it o P] f te m p e r a tu r e ? tii) A t c v A hqd d . ' X has m .A . d i' ' " " - i. . . . ig hi. g so g pc ' " e i s 4 i. W r' " . h e fo ll w in g w ir e (ii) T he (i) W w Is ir e is n at ar ir e s w a ls o c a co n n e lle d ' 1 1 k ,' " . " !p w 'p e c i d in te ar n ' " d is 1Js c d ". . o a dv p le a n ta . . . 1. t " [2 ] . '' " . To c ir c u ]'"y.cltatc.. f fin i. . O f . . c ta ? it . lt ' \ P] th e p h a s e w ir e te d to th e to p te rm in a l o f a th r e e p in so c ke t eibars ? e o n e ex am y tw ' h o t s e h o ld a [2 ]. N G iv Ity s a t ils . U ti. g p o i. t ' " 0 0 C b y p ' "di " g - u se as iEi . . . A p . . pe , "quid X '" ' "' h. Tat e a t.o f10 0w T h, M ' . o ge s f is o b a r s o f e le c tro m a g n ts v e r p e rm t an en' '" 1 8 52 1 4 T Scanned by I (4 0 M s E C T IO N i y fo r q e s llo A tte m p t a n e r iv c a re a tio n s h lp ' i ) . Fo a n e o g m ax (b ) A h a lf rc e a c ts o n . im D y u n ith th e d ire c tio w t m m e tr e r o p o s itiv e a d d is p la c e s it b y f fo . D is ta n c e S in ( 1 o rk it o t w u n . D ir e c tio n v a lu e o w h a t s h o u ld b e th e rc e 13 at " f e to g c t th c D O ig h ts t th e c e n tr e w ith tw o w p e rp e n d ic u la r d is ta n c e a s sho w n o n \ ih !s S e c tio n s a n d c G s ee n n o w o rk? d is p iv o te d at a y b e tw ns ) r k o f 6 d IO an cm f 2 0 g f a n d 12 g f o fr o m cm th e p iv o t b e lo w 50 ' cm . , . A 2 0 g - . m IO cm . . (i) W n ic h On Is th e o ro f th e tw d in e (iii) T h e d ir e c tio n re su ra lta n t o fo r c e s a c tin q u ilib r iu o m ? g y o n th e r ig id ro f th e fo a s y s te m p p lie d F in d its dra w m ec n lifts e s clckwise d w h a t is th e m o m en t? a h a n ic a l a d v l a d a n ta \ o m a g n itu d e o f th e 9 IJ O d? o f lo a d (L ), e ffo tio o f 3 m a r k in g th e d ir e c tio n T h e p u lle y re v e rse r c e s o n th e r o ' (i cau / . f 2 o k g f fo r c e Is m o m ento d r f 15 0 N a r w )a n d te n s io n (T ) D D w he n f - an e ffo r t o f 6 0 N is b Scanned by m ai a B ti e - o ' o a n :" A n 8 c m o a y T 18 5 2 1 c n th e in c id e n t ra y d e v ia te s an d em er e g s out ge o f th e o d by a n u s in g th r e e s ta n d a rd ra y s s ta r tin g fr o m p o in t A , o b ta iri b je c t A B b je c t is p la c e d a t a d is ta n ce o f 12 cm fr o m a co n v ex le n s o f fo ca l le F in d : p o s itio ' w m .. p y th e d ia g r a m im f th e p r is m ? . C - r ia tu r e o n o f th e im f th e im a ge a \ ge F , 7 \ M 6 Scanned by Q u e s tio n 7 X ' '' ' ' ' ' ' 'e s ' '' ' '' ' '' p r is m h ic h :. ' " w ' " '" [3 ] . d , " T h e d ia Ta g It is o m a bo v fb r k A is to N am (ii) N a m e th e (iii) W n y b e tw h e d to th e w o o sm phe n e s th e he n o r o S te m e te r so n o m f p a p e r fo ld e d k B at s o f tw o j th e c e n tr e ) d f v ib r a tin g tu n in g fo r k B is to h c h e o w h e n th e th e p a p e r r id r ju s t s te m v h e n th e p a p e r r id e f flie s o m en o n w p a p e r r id e r fly o ff w h e n th e s te m n is e en s ta n d in g a v e r tic a a t th e s e a s h o r e A the fire d gu n . f the n o l c lifF a n d th e p e r s o s :p e e d of so u n d n (ii) th e d is ta n c e b e tw e e n th e W an bse rv e r on an in the th e d is ta n c e b e tw e e n th e o b s e r v e r o l f n ds (j) T 18 52 1 F o f v ib r a tin g tu n in g de n bo x th e s h o r e h e a r s tw o s o u n d s , 2 s e c o o n f (a n g k A o ib r a te s o ff f tu n in g fo r k B is to u c h e d bo x ? A p e rs o n er a ll p je c e b u t th e p a p e r ju s t v ib r a te s x th e p h e n o m e n o n w do e u c (i) e r id n or s tr e tc h e d o v e r a ir e w a th e w ir e flie s o w h e n th e s te m n to th e w o o d e b n o i sh o w s b s e r v e d th a t th e a e r p p P re se n t o (c ) e T F n d he th e d 3 ai on h ic h is th e s h ip w s h o re se c o n ds r is 32 o ms fir e s a fte r - gu a n s e e in the n an c ho re T h e p e rso n g th e ca l cu l sm o ke at e ho th e s h ip a n d th e p e r s o n o n th e s h o r e o bs e rv r o n he h ip [4 ] d \ o Y m a te r 7 ( T u rn O v er : ; Scanned by (i) A fu N se a m ho s a fe tw o e h o ld u se c is r a te d 8 A F in d th e e an it b e ty d e v ic e s e le c tr ic c ir c u q u iv a le n t u se d w h ic h w , b e tw K c ia n c e to d liv e th e w O i) S ta te th ic k n A e ss o n e le c tr ic (i) h e th e r th e w ir o n is If th e ir o c o s ts f th e n is u es tio n (a ) ( H e at su u r in r a te a td A ee n B 5 w a . ir e c' " , es v n chan g o f th e c se a p p lie d to su n a t is a , 2kw LO n b s o lu te ly a so 1 1 L# j fo r 2 h d a ily fin d th e a e th e tw o a c b s ta n c e in p a c ity G iv c in th e . d 2 2 0V u se d g th e p h a s e ta te T 18 5 2 1 f a c o st o f i ru n n n ee r o n e w f g it o k if it IL n e c e s s a ry in a pow u it? e r c ir c lid c h a n g e s is th is iq u id w n a t it in to c h a n g e in p h a s e lle d ? D (iii) W (ii) o f [3] 9 c a (ii) ity o \w ir e 1 4 25 pe r kw is th e fu Q r e s is tiv ir e h B : [3 ] , le c t e c te conn a re it r e s is ta n c e a r e ith la p p r i\c/ a ~ W d 5 r a te h a n g e d o e s th e c re a s e e n e rg y a d iffe r e n a v e ra tic g e k in e f th e m o le c u le s ? b s o r b e d d u r in g th e p h a s e ces e n e rgy o b e tw " een H eat c ha n c a p a c ity ge " ca lle d ? an d H eat d S p e c ific H eat " S p e c ific [3 ] " m a th e m a tic a l r e la tio n b e tw een H e at C a p a c ity an p a c ity 8 Scanned by Scanned by Scanned by

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