9-sinf iii blok test
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9-sinf iii-blok 1-variant 2017-2018 o’quv yili iv-chorak fizika 1. massasi 1 kg bo‘lgan suvni 100c dan 110c gacha isitish uchun qanday issiqlik miqdori kerak bo‘ladi.c=4200 j/kgk a) 4200 j b) 4,2 j c) 4200 kj d) 420 j 2. suv qaysi temperaturadan boshlab qaynay boshlaydi? a) 100 c0 b) 20 c0 c) o c0 d) 10 c0 3.atom va molekulalari fazoda muayyan tartibli davriy strukturasini tashkil etgan qattiq jismlar…jismlar deyiladi. a) …kristall b) …amorf c) …polikristall d) …monokristall 4. izotermik jarayonda gazga 15 kj issiqlik miqdori berilgan bo`lsa, gaz ustida qancha ish bajarilgan bo`ladi? a) 15 j ) 15000 j c) 15 mj d) 15 gj 5. 3. yassi ko‘zguga tushgan nurning tushish burchagi qanday bo‘lganda, qaytish va tushish burchaklari …
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