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Physics – Class 11 – Term II Examination

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Physics – Class 11 – Term II Examination – Subject Code 042 – Maximum Marks 70 – 33 Questions - Navodaya Vidyalaya Samiti

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NAVODAYA VIDYALAYA SAMITI
नवोदय ववद्यालय सवमवि
TERM-II EXAMINATION -2023-24
वििीयसत्रीय परीक्षा -2023-24
CLASS: XI SUBJECT: PHYSICS (042) MAX. TIME: 3 Hrs
कक्षा : 11 ववषय : भौविक ववज्ञान (044) अवधकिम समय: 3 घण्टे
MAX. Marks: 70 अवधकिम अंक :70
SET-I


General Instructions:
सामान्य वनदेश :
Read the following instructions carefully:
निम्िलऱखित निदे शों को ध्यािपर्
ू कव पढ़िए:
(i) All questions are compulsory.
सभी प्रश्न अवनवायय हैं।
(ii) The question paper has five sections and there are 33 questions in all.
प्रश्न पत्र पांच खंडो में ववभावजि है एवं कुर 33 प्रश्न हैं।
(iii) Section–A has 16 multiple choice questions of 1 mark each;
खण्ड अ में 1 अंक के 16 फहुविकल्ऩीम प्रकाय के प्रश्न हैं ।
(iv) Section–B has 5 questions of 2 marks each;
खण्ड ब में 2अंक के 5 प्रश्न हैं।
(v) Section– C has 7 questions of 3 marks each;
खण्ड स में 3अंक के 7 प्रश्न हैं।
(vi) Section– D has 2 case-based questions of 4 marks each;
खण्ड द में 4 अंक के 2 के स आधाररि प्रश्न हैं।
(vii) Section– E has 3 questions of 5 marks each.
खण्ड- ई में 3 प्रश्न हैं वजनमें से प्रत्येक 5 अंक का है।
(viii) There is no overall choice. However, internal choices have been provided in
some questions. student has to attempt only one of the alternatives in such
questions
यद्यवप कोई समग्र ववकल्प नहीं है िथावप कु छ प्रश्नों में आंिररक ववकल्प हैंववद्यार्थथयों से अपेवक्षि है कक वे
के वल एक ववकल्प का ही चयन करें|
(ix) Wherever necessary, neat and properly labelled diagrams should be drawn.
जहााँ आवश्यक हो स्वच्छ और नामांककि वचत्र बनाएं |कै लकु लेटर के उपयोग की अनुमवि नहीं है ।




SECTION -A
(खण्ड-अ)
1 Taking into account the significant figures, what is the value of 9.99m – 0.0099m? 1
साथथक अॊकों को ध्मान भें यखते हुए, फताओ 9.99m – 0.0099m का भान क्मा है ?
(a) 9.98m (b) 9.980m (c) 9.9m (d) 9.9801m

2 A force of 49 N is just able to move a block of mass 10 kg on a rough horizontal surface. 1
The coefficient of friction is?

, 49 N का फर ककसी खयु दये ऺैततज ऩष्ृ ठ ऩय 10 kgद्रव्मभान के एक गुटके को गतत प्रदान भें सऺभ
है । घर्थण गुणाॊक है ?
(a) 0.8 (b) 0.5 (c) 0.2 (d) 1.0
3 On which of the following factors moment of inertia of an object does not depend? 1
तनम्नलरखखत भें से ककस कायक ऩय ककसी िस्तु का जड़त्ि आघूणथ तनबथय नह ॊ कयता?
(a) Axis of rotation (घूणन
थ अऺ)
(b) Distribution of mass (द्रव्मभान का वितयण)
(c) Angular velocity (कोणीम िेग)
(d) Mass of an object (ककसी िस्तु का द्रव्मभान)


4 One quarter sector is cut from a uniform circular disc of radius R. This sector has mass 1
M. It is made to rotate about a line perpendicular to its plane and passing through the
centre of the original disc. Its moment of inertia about the axis of rotation is
त्रिज्मा R की एक सभान ित्त ृ ाकाय डडस्क से एक चौथाई खॊड काटा जाता है । इस ऺेि भें द्रव्मभान
M है । इसे भूर डडस्क के केंद्र से गुजयते हुए अऩने तर के रॊफित ये खा के ऩरयत् घूणन
थ कयामा
जाता है । घण
ू न
थ अऺ के ऩरयत् इसका जड़त्ि आघण
ू थ क्मा है ?
1 1 1
(a) 2MR2 (b) 4MR2 (c) 8MR (d) 2MR2
5 Conservation of momentum in a collision between particles follows 1
कणों के फीच सॊघट्टभें सॊिेग का सॊयऺण ऩारन कयता है
(a) Conservation of energy (ऊजाथ का सॊयऺण)
(b) Newton's second law only (केिर न्मूटन का द्वितीम तनमभ)
(c) Newton's first law only (केिर न्मूटन का प्रथभ तनमभ)
(d) Both Newton's second and third law (न्मूटन का द्वितीम ि तत ृ ीम तनमभ दोनों)
6 A particle falling through a viscous liquid reaches its terminal velocity. The acceleration 1
then is
श्मान द्रि भाध्मभ भें गगयने िारा एक कण अऩने सीभाॊत िेग तक ऩहुॊचता है । तफ इसका त्ियण
होगा ।
(a) g (b) <g (c) >g (d) 0

7 When temperature of water decreases from 4oC to 0oC its density……………, 1
Volume…………..
जफ ऩानी का ताऩभान 4oCसे 0oC तक कभ हो जाता है , तो इसका घनत्ि………, आमतन……..
(a) Increases, increases.फढ़ता है , फढ़ता है
(b) Increases, decreases.फढ़ता है , घटता है
(c) Decreases, decreases.घटता है , घटता है
(d) Decreases, increases. घटता है , फढ़ता है


8 Water in a capillary tube rises to a height of 6 cm. The area of cross section of the capillary 1
is made one- fourth. Water will raise up to
एक केलिका नर भें ऩानी 6 सेभी की ऊॊचाई तक चढ़ जाता है । केलिका के अनप्र
ु स्थ काट का ऺेिपर एक-

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