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9-sinf 4 mavzu

Authored by Bunyod Saydaliyev

Physics

9th Grade

Used 1+ times

9-sinf 4 mavzu
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Elastik prujinaga osilgan yuk garmonik tebranadi. Shu yuk xuddi shunday, lekin 16 marta uzun prujinaga osilsa, tebranish davri qanday o‘zgaradi?

2 marta kamayadi

2 marta ortadi

uzgarmaydi  

4 marta ortadi

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Agar tebranish davri T bo‘lgan prujinali mayatnikka osilgan yukning massasi n marta oshirilsa, uning tebranish davri qanday bo‘ladi?

n*T

n2*T

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Massasi 4 kg bo‘lgan yuk prujinaga osilgan va T davr bilan garmonik tebran­mokda. Davr T/2 gacha qisqarishi uchun yukning necha kilogrammini olib tashlash kerak?

2

3

1

3.5

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Prujinaga 100 g yuk osilgan va u minutiga 120 marta tebranadi. Prujinaning bikrligini aniqlang (N/m).

12

120

16

40

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Bikrligi 100 N/m bo‘lgan prujinaga qanday massali yuk osilganda, uning tebranish chastotasi 5 Hz bo‘ladi (g)?

200

25

100

50

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Qanday sharoitda matematik mayatnikning tebranish davri cheksiz katta bo‘ladi?

bunday bo‘lishi mumkin emas

ekvatorda

qutbda

vaznsizlikda

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Oyga yerdan olib chiqilgan matematik mayatnikning tebranish davri yerdagidek bo‘lishi uchun uning uzunligini qanday o‘zgartirish kerak. Oyda erkin tushish tezlanishi yerdagidan 6 marta kichik.

o‘zgartirish kerak emas

6 marta orttirish kerak

36 marta qisqartirish kerak

6 marta qisqartirish kerak

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