The correct answer is: 7,2
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Correct Mark 1.00 out of 1.00 Flag question Question text Agar qaytgan va singan nurlar orasidagi burchak 120 gradus bo’lsa, havodan etil spirt (n=1,36) ga o’tishdagi nurning sinish burchagini aniqlang. Select one: a. 35 gradus b. 30 gradus c. 25 gradus d. 40 gradus Feedback The correct answer is: 25 gradus Question 23 Incorrect Mark 0.00 out of 1.00 Flag question Question text IV guruppa elementiga V guruh elementi qo’shilsa qanday turdagi yarim o’tkazgich hosil bo’ladi? Select one: a. Akseptor b. A va C to’g’ri c. Donor
d. n-tip Feedback
The correct answer is: A va C to’g’ri Question 24 Incorrect Mark 0.00 out of 1.00 Flag question Question text Doiraviy xira shisha sirtiga 120 lm yoruqlik oqimi tushadi. Shishaning diametri 0,45 m teng uning yoritilganligi (lk) qanday? Select one: a. 755 b. 378
c. 590 d. 273
Feedback The correct answer is: 755 Question 25 Correct
Mark 1.00 out of 1.00 Flag question Question text Massasi elektron massasiga teng bo’lgan foton energiyasini (MeV) toping? Select one: a. 49,3
b. 12,8 c. 51,2
d. 34 Feedback
The correct answer is: 51,2 Question 26 Incorrect Mark 0.00 out of 1.00 Flag question Question text Agar yorug’lik vakumda yer ekvatorining uzunligiga teng masofani 0,139 s da o’tsa, yer sharining radiusini (km) aniqlang. Select one: a. 6400 b. 6370
c. 6640 d. 8310
Feedback The correct answer is: 6640 Question 27 Correct
Mark 1.00 out of 1.00 Flag question Question text Amper kuchini yo’nalishi qanday aniqlanadi? Select one: a. Parma qoidasi b. Chap qo’l qoidasi c. Vint qoidasi d. Lens qoidasi Feedback
The correct answer is: Chap qo’l qoidasi Question 28 Correct Mark 1.00 out of 1.00 Flag question Question text Sim yog’ochga osilgan lampaning kuchi 300 kd, yer sirtidan balandligi esa 3 m ga teng. Yer sirtining lampa ostidagi nuqtasidan 4 m masofda joylashgan, nuqtalarinng yoritilganligini (lk) toping. Select one: a. 7,2 b. 2,9
c. 8,1 d. 5,4
Feedback The correct answer is: 7,2 Question 29 Correct
Mark 1.00 out of 1.00 Flag question Question text Agar 0,002 s davr bilan tebranuvchi to’lqin manbai suvda 2,9 m uzunlikli to’lqin uyg’atayotgan bo’lsa, to’lqinni tarqalish tezligini (m/s) toping? Select one: a. 9870
b. 500 c. 1450
d. 1200 Feedback
The correct answer is: 1450 Question 30 Incorrect Mark 0.00 out of 1.00 Flag question Question text Induktivligi 400 mkGn va ko’ndalang kesim yuzi 10 sm2 bo’lgan salinoid orqali 0,5 A tok o’tmoqda. O’ramlar soni 100 ta. Solenoid ichidagi magnit maydon induksiyasi (mTl) qancha. Select one: a. 1,5 b. 2,6
c. 1 d. 2
Feedback The correct answer is: 2 Yorog’lik absalyut oq jismga tushganda, absalyut qora jismga tushgandagiga nisbatan ko’p bosim beradi? Select one: a. 2 b. 16
c. 10 d. 4
Feedback The correct answer is: 2 Question 2 Incorrect Mark 0.00 out of 1.00 Flag question Question text Magnitlanmagan po’lat strelka gorizantal ravishda shunday joylashtirilganki, u gorizantal va vertikal tekisliklarda erkin aylana oladi. U magnitlangandan so’ng hamma vaqt Yerning magnit maydonida gorizantal holatda qolaveradimi. Select one: a. Ha faqat yerdan uncha katta bo’lmagan balandliklarda b. Ha c. yo’q faqat magnit ekvatorida bo’ladi d. yo’q faqat magnit qutublarda Feedback
The correct answer is: yo’q faqat magnit ekvatorida bo’ladi Question 3 Correct Mark 1.00 out of 1.00 Flag question Question text Buyum yig’uvchi linzadan F va 2F oralig’iga joylashtirilsa, buyum tasviri qayerda hosil bo’ladi. Select one: a. linza va F oralig’ida b. 2F
c. F d. 2F dan uzoqda Feedback The correct answer is: 2F dan uzoqda Question 4 Incorrect Mark 0.00 out of 1.00 Flag question Question text Qanday EYUK sistemasi simmetirik hisoblanadi? Select one: a. o’zaro tik b. Fazalari bir-biriga nisbatan 60 gradus siljigan c. Fazalari bir-biriga nisbatan 120 gradus siljigan d. Fazalari bir-biriga nisbatan 30 gradus siljigan Feedback
The correct answer is: Fazalari bir-biriga nisbatan 120 gradus siljigan Question 5 Incorrect Mark 0.00 out of 1.00 Flag question Question text Molekula yonidan zaryadlangan zarra uchib o’tmoqda. Bu paytda malekulaga nisbatan magnit maydon mavjudmi. Agar mavjud bo’lsa zarracha ishorasiga bog’liqmi? Select one: a. mavjud, ha b. mavjud, yo’q c. mavjud emas, ha d. mavjud emas, yo’q Feedback The correct answer is: mavjud, yo’q Question 6 Incorrect Mark 0.00 out of 1.00 Flag question Question text Konturdagi eletomagnit tebranishlarga g’altakning aktiv qarshiligi qanday ta’sir ko’rsatadi? Select one: a. majburiy tebranishlar hosil bo’lishiga va xususiy tebranish davraning o’zgarishiga b. tebranishkarining so’nishiga va amplitudani o’zgarishiga c. majburiy tebranishlar hosil bo’lishiga va amplitudani o’zgarishiga d. tebranishlarining so’nishiga va xususiy tebranish davraning o’zgarishiga Feedback
The correct answer is: tebranishlarining so’nishiga va xususiy tebranish davraning o’zgarishiga Question 7 Correct Mark 1.00 out of 1.00 Flag question Question text Agar yoruqlik bilan yoritilgan yupqa pardaga uning sirtiga perpendicular yo’nalishda qaralsa , qaytgan yorug’likda u yashil bo’lib ko’rinadi. Agar parda yorug’lik nurlariga nisbatan og’dirilsa, unning tusi qanday ozgaradi? Select one: a. Pardaning rangi yashil rangdan asta – sekin havo rangiga , ko’k va binavsha ranga o’tadi b. o’zgarmaydi c. sariqqa o’tadi d. pardaning rangi yashil rangdan asta – sekin qizil rangiga va binavsha ranga o’tadi Feedback The correct answer is: Pardaning rangi yashil rangdan asta – sekin havo rangiga , ko’k va binavsha ranga o’tadi Question 8 Correct
Mark 1.00 out of 1.00 Flag question Question text 1,5 MGs chastotada ishlayotgan radiostansiya tolqinining tolqin uzunligi (m) qanchaga teng? Select one: a. 120
b. 200 c. 280
d. 300 Feedback
The correct answer is: 200 Question 9 Correct Mark 1.00 out of 1.00 Flag question Question text Kimning tajribasi natijasida atomni Yadroviy ya’ni Planetar modelitaklif qilindi? Select one: a. Frank-Gers b. P.Lebedev c. Rezerford d. J.Tomson Feedback The correct answer is: Rezerford Question 10 Incorrect Mark 0.00 out of 1.00 Flag question Question text Egrilik radiuslari bir xil va 20 sm dan, absolyut sindirish korsatkichi 1,5 bo’lgan shishadan yasalgan ikkiyoqlama qavariq fokus masofasi (sm) qanchaga teng? Select one: a. 50
b. 40 c. 20
d. 30 Feedback
The correct answer is: 20 Question 11 Correct Mark 1.00 out of 1.00 Flag question Question text Doiraviy xira shisha sirtiga 120 lm yoruqlik oqimi tushadi. Shishaning diametri 0,45 m teng uning yoritilganligi (lk) qanday? Select one: a. 273 b. 590
c. 378 d. 755
Feedback The correct answer is: 755 Question 12 Correct
Mark 1.00 out of 1.00 Flag question Question text G’altak induktivligi 1,4 mGn, undan o’tayotgan tok kuchi 40 A bo’lsa, g’altakda hosil bo’lgan magnit maydon energiyasi (J) qancha bo’ladi? Select one: a. 2,24
b. 1,76 c. 2,8
d. 1,56 Feedback
The correct answer is: 2,24 Question 13 Correct Mark 1.00 out of 1.00 Flag question Question text Spiral shaklidagi o’ralgan yumshoq sim bir uchi bilan osilgan. Agar spiral orqali tok o’tsa nima bo’ladi. Select one: a. Spiral siqiladi b. Spiral diometri ortadi c. Spiral o’zgarmaydi d. Spiral cho’ziladi Feedback The correct answer is: Spiral siqiladi Question 14 Correct
Mark 1.00 out of 1.00 Flag question Question text Qizil chegarasi 496,5 nm bo’lgan moddadan elektronni chiqish ishini (eV) toping. Select one: a. 3,2
b. 1,5 c. 2
d. 2,5 Feedback
The correct answer is: 2,5 Question 15 Correct Mark 1.00 out of 1.00 Flag question Question text Yorug’lik nurini ikki nuqtasi orasidagi masofa 3λ; 2nλ/2 (n- butun son) bo’lsa bu nuqtalardagi fazasi haqida nima deyish mumkin? Select one: a. fazalari π/2 ga farq qiladi b. fazalari π ga farq qiladi c. fazalari 2 π /3 ga farq qiladi d. fazalari bir xil Feedback The correct answer is: fazalari bir xil Question 16 Incorrect Mark 0.00 out of 1.00 Flag question Question text IV guruppa elementiga III guruh elementi qo’shilsa qanday turdagi yarim o’tkazgich hosil bo’ladi? Select one: a. p-tip
b. Akseptor c. Donor d. B va C to’g’ri Feedback
The correct answer is: B va C to’g’ri Question 17 Incorrect Mark 0.00 out of 1.00 Flag question Question text Past chastotali tokning oniy qiymati I=0,564 sin12,56 t (A) qonun bo’yicha o’zgaradi. 10 davrga teng vaqt davomida 15 Om aktiv qarshilikli o’tqazgichda qancha issiqlik miqdori (J) ajraladi? Select one: a. 21 b. 38
c. 43 d. 12
Feedback The correct answer is: 12 Question 18 Correct
Mark 1.00 out of 1.00 Flag question Question text O’tkazgich kontur bir jinsli bo’lmagan magnit maydonda ilgarlanma harakat qilmoqda. Bu holda konturda induksion EYuK paydo bo’ladimi. Select one: a. agar o’tkazgich ferromagnit moddadan iborat bo’lsa, ha b. agar o’tkazgich ferromagnit moddadan iborat bo’lsa, yo’q c. ha
d. yo’q Feedback
The correct answer is: ha Question 19 Correct Mark 1.00 out of 1.00 Flag question Question text Bir to’g’ri chiziqda joylashgan va tebranish manbaidan 12 m va 14 m masofalarda turgan nuqtalar 3 π/2 rad faza farqi bilan tebranmoqda. Agar manbaning tebranish davri 0,00000001 s bo’lsa, bu tebranishlarni tarqalish tezligini (km/s) toping? Select one: a. 5,4 b. 3,6
c. 4,5 d. 2,4
Feedback The correct answer is: 3,6 Question 20 Correct
Mark 1.00 out of 1.00 Flag question Question text 1 mm 125 shtrixi bo’lgan difraksion panjarada ekrangacha masofa 2,5 m teng. Panjara 420 nm to’lqin uzunlikli yorug’lik bilan yoritilganda ekranda ko’k chiziqlar ko’rinadi. Ekrandagi markazi chiziqdan birinchi chiziqqacha masofani (sm) aniqlang. Select one: a. 13
b. 9 c. 17
d. 22 Feedback
The correct answer is: 13 Question 21 Incorrect Mark 0.00 out of 1.00 Flag question Question text Kinetik energiyasi 20 keV bo’lgan electron bir jinsli magnit maydonda 20 sm radiusli aylana bo’ylab harakatlanayotgan bo’lsa, maydon induksiyasini toping (mTl). Select one: a. 18 b. 8,5
c. 22 d. 2,4
Feedback The correct answer is: 2,4 Question 22 Correct
Mark 1.00 out of 1.00 Flag question Question text Agar quyoshdan yergacha masofa 150 million km bo’lsa, yorug’lik yerga qancha vaqtda yetib keladi? Select one: a. 2 soat b. 14 min, 12 s c. 8 min, 20 sek d. 320 sekend Feedback
The correct answer is: 8 min, 20 sek Question 23 Correct Mark 1.00 out of 1.00 Flag question Question text IV guruppa elementiga V guruh elementi qo’shilsa qanday turdagi yarim o’tkazgich hosil bo’ladi? Select one: a. Donor b. A va C to’g’ri c. Akseptor d. n-tip
Feedback The correct answer is: A va C to’g’ri Question 24 Incorrect Mark 0.00 out of 1.00 Flag question Question text Kuzatuvchi suv ostida 40 sm chuqurlikda turibdi va uning tepasida, uning chamalashib 2,4 m balandlikda lampa osilgan. Lampada suv sirtigacha masofaning (m) haqiqiy qiymatini aniqlang. Select one: a. 1,8
b. 2,1 c. 0,95
d. 1,5 Feedback
The correct answer is: 1,5 Question 25 Correct Mark 1.00 out of 1.00 Flag question Question text Transformator salt ishlaganda tarmoqda oz energiya oladi. Bu energiya nimaga sarf bo’ladi? Select one: a. Quvvatni orttirishga b. Qizishiga c. Kuchlanishni orttirishga d. Magnit mayonni elektr maydonga aylantirishga Feedback The correct answer is: Qizishiga Question 26 Correct
Mark 1.00 out of 1.00 Flag question Question text 100 va 50 kd ikkita lampa bir-biridan 2,4 m masofada joylashgan. Noshaffof ekarnni ularning orasida qayerda o’rnatilsa, uning har ikkila tomonini yoritilgani bir xil bo’ladi? Select one: a. 100 kd li lampadan 1,4 m masofada b. 50 kd li lampadan 2,4 m masofada c. 100 kd li lampadan 2,1 m masofada d. 50 kd li lampadan 1,4 m masofada Feedback
The correct answer is: 100 kd li lampadan 1,4 m masofada Question 27 Correct Mark 1.00 out of 1.00 Flag question Question text Amper kuchini yo’nalishi qanday aniqlanadi? Select one: a. Chap qo’l qoidasi b. Parma qoidasi c. Lens qoidasi d. Vint qoidasi Feedback The correct answer is: Chap qo’l qoidasi Question 28 Incorrect Mark 0.00 out of 1.00 Flag question Question text Agar vodorod atomlarida electron uchinchi tartibli oribitada bo’lsa, vodorod atomlari turli energiyali qancha kvan chiqarishi mumkin? Select one: a. 4 ta
b. 5 ta c. 6 ta
d. 3 ta Feedback
The correct answer is: 3 ta Question 29 Incorrect Mark 0.00 out of 1.00 Flag question Question text Radilokatsion stansiyaning ta’sir doirasi radiusini 2 martta ortirish uchun U ni qanday o’zgartirish kerak? Select one: a. 4 martta orishi b. 16 martta orttirishi c. 16 martta kamayishi d. 4 martta kamayishi Feedback The correct answer is: 16 martta orttirishi Question 30 Correct
Mark 1.00 out of 1.00 Flag question Question text Yassi silliq sirtda sirtmoq shaklida bukulgan yumshoq sim joylashgan. Agar undan kuchli tok o’tkazilsa, u qanday shaklni oladi. Select one: a. Aylana b. to’g’ri chiziq c. vintsimon d. ellips Feedback
The correct answer is: Aylana Yorog’lik absalyut oq jismga tushganda, absalyut qora jismga tushgandagiga nisbatan ko’p bosim beradi? Select one: a. 4
b. 16 c. 2
d. 10 Feedback
The correct answer is: 2 Question 2 Incorrect Mark 0.00 out of 1.00 Flag question Question text Nima sababdan gulxan oldida o’tirganimizda gulxanning narigi tomonidagi buyumlar tebranib ( chimirlab) ko’rinadi? Select one: a. gulxan ta’sirida molekulalar harakatlanganligi uchun b. gulxan nurni qaytarganligi uchun c. gulxan tepasidagi havoni sindirish korsatkichi o’zgarganligi uchun d. gulxan tufayli yorug’lik tezlashganligi uchun Feedback The correct answer is: gulxan tepasidagi havoni sindirish korsatkichi o’zgarganligi uchun Question 3 Correct
Mark 1.00 out of 1.00 Flag question Question text Yorug’likni yo’lida uchragan shaffofmas to’siqni aylanib o’tishi yoki geomertik soya sohasiga kirib boorish hodisasi nima deb ataladi? Select one: a. Dispersiya b. Interferensiya c. Qutublanish d. Difraksiya Feedback
The correct answer is: Difraksiya Question 4 Correct Mark 1.00 out of 1.00 Flag question Question text Massasi elektron massasiga teng bo’lgan foton energiyasini (MeV) toping? Select one: a. 34 b. 51,2
c. 49,3 d. 12,8
Feedback The correct answer is: 51,2 Question 5 Correct
Mark 1.00 out of 1.00 Flag question Question text Nur sindirish ko’rsatkichi 1,73 bo’lgan shishadan suvga o’tayotgan xol uchun to’la qutblanish burchagi nimaga teng bo’ladi? Select one: a. 30 gradus b. 25 gradus c. 42 gradus d. 40 gradus Feedback
The correct answer is: 30 gradus Question 6 Correct Mark 1.00 out of 1.00 Flag question Question text Fazoda kuch chiziqlari yopiq elektr maydon bo’lishi mumkinmi. Select one: a. Ha, bu maydonni o’zgarmas magnit maydon hosil qilgan bo’lsa b. kuch chiziqlarini yopiq bo’lishligi magnit maydonga bog’liq emas c. yo’q d. Ha, bu maydonni o’zgaruvchan magnit maydon hosil qilgan bo’lsa Feedback The correct answer is: Ha, bu maydonni o’zgaruvchan magnit maydon hosil qilgan bo’lsa Question 7 Correct
Mark 1.00 out of 1.00 Flag question Question text Tokli o’tkazgichlar atrofida magnit maydon hosil bo’lishligini birinchi bo’lib kim aniqlagan? Select one: a. M.Faradey b. A.Papov c. Erestet d. I.Nyuton Feedback
The correct answer is: Erestet Question 8 Correct Mark 1.00 out of 1.00 Flag question Question text Yorug’lik tasirida jism sirtidan elektronlarni ajralib chiqish hodisasiga nima deb ataladi? Select one: a. Qutublanish b. Dispersiya c. Difraksiya d. Fotoeffekt Feedback The correct answer is: Fotoeffekt Question 9 Correct
Mark 1.00 out of 1.00 Flag question Question text 1 mm 125 shtrixi bo’lgan difraksion panjarada ekrangacha masofa 2,5 m teng. Panjara 420 nm to’lqin uzunlikli yorug’lik bilan yoritilganda ekranda ko’k chiziqlar ko’rinadi. Ekrandagi markazi chiziqdan birinchi chiziqqacha masofani (sm) aniqlang. Select one: a. 13
b. 9 c. 17
d. 22 Feedback
The correct answer is: 13 Question 10 Correct Mark 1.00 out of 1.00 Flag question Question text Yorug’lik to’lqini ko’ndalang to’lqin ekanligini tasdiqlovchi hodisa qaysi? Select one: a. Dispersiya b. Qutublanish c. Interferensiya d. Difraksiya Feedback The correct answer is: Qutublanish Question 11 Incorrect Mark 0.00 out of 1.00 Flag question Question text Qanday o’zgaruvchan tok sistemasi uch fazali tok deb ataladi? Select one: a. boshlang’ich fazalari bir biriga nisbatan 1/8 davr siljigan, har xil chastotali uchta EYUK ta’sir etuvchi o’zgaruvchan tok sanjiri b. boshlang’ich fazalari bir biriga nisbatan 1/3 davr siljigan, bir xil chastotali uchta EYUK ta’sir etuvchi o’zgaruvchan tok sanjiri c. boshlang’ich fazalari bir biriga nisbatan 1/8 davr siljigan, bir xil chastotali uchta EYUK ta’sir etuvchi o’zgaruvchan tok sanjiri d. boshlang’ich fazalari bir biriga nisbatan 1/3 davr siljigan, har xil chastotali uchta EYUK ta’sir etuvchi o’zgaruvchan tok sanjiri Feedback
The correct answer is: boshlang’ich fazalari bir biriga nisbatan 1/3 davr siljigan, bir xil chastotali uchta EYUK ta’sir etuvchi o’zgaruvchan tok sanjiri Question 12 Correct Mark 1.00 out of 1.00 Flag question Question text Yupqa linzaning optik kuchi 5,0 Dptr ga teng. Buyum linzadan 60 sm masofada joylashgan. Buyumning ta’sviri qayerda hosil bo’ladi va u qanday ta’svir bo’ladi? Select one: a. f=20sm; tasvir mavhum, to’g’ri va kattalashgan b. f=30sm; tasvir haqiqiy, to’nkarilgan va kichraygan c. f=30sm; tasvir haqiqiy, to’g’ri va kichraygan d. f=20sm; tasvir mavhum, to’g’ri va kichraygan Feedback The correct answer is: f=30sm; tasvir haqiqiy, to’nkarilgan va kichraygan Question 13 Correct
Mark 1.00 out of 1.00 Flag question Question text 1,5 MGs chastotada ishlayotgan radiostansiya tolqinining tolqin uzunligi (m) qanchaga teng? Select one: a. 200
b. 280 c. 300
d. 120 Feedback
The correct answer is: 200 Question 14 Incorrect Mark 0.00 out of 1.00 Flag question Question text Agar o’zaksiz galtak o’ramlari sonini uning chiziqli o’lchamlariga ta’sir qilmasdan 2 barobar orttirilsa, induktivligi necha martta o’zgaradi. Select one: a. 2 martta kamayadi b. 2 martta ortadi c. 4 martta ortadi d. 4 martta kamayadi Feedback The correct answer is: 4 martta ortadi Question 15 Correct
Mark 1.00 out of 1.00 Flag question Question text Stol o’rtasidan 1,2 m balandlikda lampa osilgan. Stol sirtining diametri 1,2 ga teng. Agar lampaning to’la yorug’lik oqimi 750 lm bo’lsa stol chekkalarining yoritilganligi (lk) qanchaga teng? Select one: a. 80
b. 30 c. 26
d. 65 Feedback
The correct answer is: 30 Question Download 0.97 Mb. Do'stlaringiz bilan baham: 
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