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ICSE Board Exam 2018 : Physics FIRST

10 pages, 79 questions, 76 questions with responses, 87 total responses,    2    0
Rachit Katiyar
Sheiling House School, Kanpur Nagar
1st to 10th Science
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R e d lig h t o r G re e n lig h t 12 1 g fir e lo o k s w hite f th e fo llo w in g s ta te m e n ts a is tru e ? M o le c u le s o f th e sm o ke a re M o le c u le s o f th e sm o ke a re s m a lle r th a n th e w a v e le n b igg e r th a n th e w a v e le n g th o f lig h t g th o f light Scanned by Q . o n 3 (a ) D is p n m m e d iu m m pnt , d i a n c e g ra p h u e a s s ho w n o f tw so u n . d w aves A an o so u n d , tra . N in g i. a 2 in th e d ia g ra m b e lo w D is . S tu d y th e tw d B w a v es an d com (c m ) . p a r e th e ir } (b ) Y o u h a v e th r e e r e s is to r s o f v a lu e s 2 0 , 30 an d 50 H o w w ill y o u jo in th e m so th a t th e to ta l r e s is ta n c e is m o r e th a n 7 0 ? m D (ii) C a lc u la te th e T 18 5 2 1 ra w a d ia g r a m fo r th e a r r a n g e m e n t e q u iv a le n t r e s is ta n c e 3 T ( u r Scanned by f o bo dy (e ) H is th e o w r e la te (ii) O Q u e s tio n d w o w O i) a te m re ? can te m p e r a tu so lid r a te o (c ) Identi th e a ry a n d se c o n d a ry co ils o f tra a n sl ? h f turns o f c o il in t e m f c u rr e n t d Q tra n s fo r m m ax N am e f 10 0 W m in W fo llo w in g e rs w o rk ? ir e s w a ls o c a T hq w i e is c o n n e c te d an on F exam y tw s ific h e a t c a p a c ity e m e tim lts a t its e lle d u se d as in m e ltin ta k e n fo n a t is th e s p e c ific ir e is is o b u u s p e c c o n v e r te an d in to S I d is d u se u n it o a s a c o o la n f 2] t th e liq u id X th w Wnat im g 15 o g T he (ii) G iv e S ta te o pr im p e r a tu r e in d e g r e e C e ls iu s b m e ta l w ig h in te m p e r a tu r e is 4 (d ) (i) be r o a r r a d ia to r s h e t a t th e (i) n u m A iq u id X h a s th e in C A A c ro s s tin u o u s ly 4 (a ) (i) H (b ) ith th e h ic h typ e n w f e m co n ho a r o v id in g g p o in t o f 8 0 0 c b y p r o it to co m p le te ly m e la te n t h e a t o f fu s io n u se h o ld c ir c u o lt a t th e f th e P sam e m e ta l? it th e p h a s e w ire to th c to p te rm i a l o f a th r e e p in s ? p le o f is o b a rs o a d v a n ta g e s o f e le c tr o m a g n e t ov er p e rm an en tm a g n e ts 12 1? *w 4 Scanned by tte m p t a n y fo Q u e s tio n e v e a r e la A fo an m im de d r e s p e c tiv e a ly (i) W W C h o f th e M T h e d ir e c tio i. lta n t m ra w ra tio o f 3 (iii) T 18 5 2 1 Is th e a f fo ld b e th e 13 ] o rk d is ta n c e S in n at sho u W rc e it o f w d ir e o tio a v a lu e o n at an f e to g e t th e [3 ] w e ig h ts o f 2 0 g f a n d 1 2 g f th e c e n tr e w ith t w o o f 6 cm an d 10 fro cm p iv o t th e m b e lo w fo rc e s . Tin o. g Th . R ig id ro d c a u s e s c lo c M se . O . e n t? is rc e r e v e rs e d W h a t is Th e m a g n itu d e o f th e t o f th e fo r c e s o n th e ro d ? o m en s ho w a b lo c k 8 th e d ir e c tio n s y s te m F in d its at f 2 0 k g f fo o m a r k in (ii) T h e p u lle y o a u n &4r ' ilib iu . ? d ia g r a m to D a p p lie d o E qu n d d is p la c e s it b y p e rp e n d ic u la r d is ta n c e a s s ho w n (iii) a d is p iv o te d t a Is th . ' " an d C G S w r p e w o rk ? p o s itiv ro ( j) bo dy ith th e d ir e c tio n w u m e tr e m tio n s h ip b e tw e e n s I a n r c e a ts o n a g le e a x h a lf su spe n (c ) (i) th is S e c tio n jr o n \ D (ii) re s u ns 5 (a ) (i) A q u e s tio p dra w m ec n ifts o a h a n ic a l a d v b o v e p u lle y s y s te m an an le y s y s te m h a v in g d ta c k le p u f lo a d (L ), e f o r t(E ) a n d te n s io lo a d o f 15 0 N w he n an e n a v e lo c ity [4 ] m f fo r t o f 6 0 N is a n ta g e id e a l m ac h in e or no t? T u rn O ver Scanned by m W h a t is t h e o (ii) N A n o le n g le th r o u gh w h ic h th e in c id e n t ra y d e v ia te s an d em e rg e s o u t f th e p r is m ? a m e th e (iii) W h ic h (b ) an in s tr u p sm m en t w h e r e th is a c tio n o s u r fa c e w b je c t A B is p la c e d b e tw s a s sho w n ill b e h a v e ee n o an as a m d F ro n f p r is m is p u t in to u se ir r o r ? th e p r in c ip a l a x is o f a c o n v e r g in g 3] in th e d ia g r a m 8 F in d cm m ( i) LEN S e p o s itio n n a tu e o o fe f th e im im a ge age 6 Scanned by Scanned by c o n n e c te q u iv e tw t r e s is ta n c e b e a le n A een an d d B 6 0 B O A . O i) s ta te w th ic m ess o A (c ) n e le c tr ic (i) If th e c o s Ts ir o ,ro n n f th e is is d 220V u se d fo 1 4 2 5 pe , k w r , u e s tio n H e at su ca lle d ? D o (iii) W (b ) (i) a ir e w c h a n ge s w ith th e c h a n g e in th e 14 ] 2 h d a ily n d th e c o sT o f r u n n in g it fo r o n e w ee k if it n in n e c e s s a ry a pow e r c i u it? 9 (a ) (i) (ii) f 2kw O i) W h y is th e fu s e a b s o lm e ]y Q o ir e w r a te ity r e s is tiv h e th e r th e u p p lie d to n g th e p h a s e f th e su c lid c h a n g e s it in t liq u id W h a n g e d o e s th e a v e ra n a t is g e k in e tic th is c e n e rgy o 13 1 h a n g e in p h a s e f th e m o le c u le s b s ta n c e in c r e a s e ? D a t is th e S ta te tw a so o e n e r gy a b s o r b e d d w in g th e p h a s e d ifre r e n c e s b e tw een H c h a n ge C a p a c ity " eat ca lle d? an d " S p e c ific H e at 13 1 c a p a c ity " a ti a l r la tio n b tw een H e 8 Scanned by Q u e s tio n 10 (a ) T h e d ia r a m g (i) s h o ww asi a d co i lw o u n tt (iii) W n at w w a y to s tr e n ; " n a b le m o r e e a s il y (il th e is o to p e am e (ii) G iv e W a a a t th e g th e n th e fo u n d in is o to p e s is N d U sha pe so ft ir o n b a r A 8 en ds A d B an m a w g n e tic fie ld in th e ill b e th e o l i p a r tie s a t A & 8 if th e d ir e c tio n th e is o to p e s a r e fis s io 018 52 1 a ro u n h e n th e sw itc h Is d? (ii) S u g g e s t o n e (iii) d W a t is th e p o la r ity in d u c e d p re s s e (b ) T h e a re a s o n , it is fo un d ou t f c u T e n t is gn e t re v e rs e d ' . .. 92 u ex 2 38 p e r im d e n ta 92 . 5 lly th a t [3 ] . . on e o f th e tw o fis s io n a b le o fU fo r y o u r r a n iu m w h ic h is e a s ily r a n iu m 238 fis s io n a b le a n sw e r r ite a n u c le a r r e a c tio n w T h o r iu m \ Contain o e le c tr o m a he n U em its an a ph a p a r tic le to fo rm e t s (T h ) n u c 9 T u rn Scanned by U th ic u la r to th e ir p a p a th o fA o , f th e B an a re ra d ia tio n A s ho w n , B an b e lo in th e w A d C n sw e r dC - (i) N a m th e r a d ia tio n B w h ic h is u n a ffe c te d e (ii) W h y d o e s th e (iii) w D ic h (iv ) N a m e am on r a d ia tio n g th e th r e e th e r a d ia tio n w C d e fle c t m c a u se s h ic h is o re b y th e e le c tr o s ta tic th a n A ? th e le a s t b io lo g ic a l d a m a g e u se d in fie ld c a rbo n externally? d a tin g liB ig Scanned by

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