Fizika 7- sinf I- chorak i-variant

Fizika 7- sinf II-chorak 1- variant JAVOBLAR
mv2

1. 
   C 11 E 21 F = m.i = ──
   
2. 
   A 12 E R
   
3. 
   E 13 A 22 markazga tomon
   
4. 
   C 14 B 23 tarozi
   
5. 
   B 15 D 24 F_mq= m*ω²*R
   
6. 
   E 16 D 25 aks ta’sir
   
7. 
   D 17 D
   
8. 
   B 18 kuch
   
9. 
   A 19 inertik
   
10. 
    D 20 teskari prororsional
    

Fizika 7- sinf II-chorak 1I- variant JAVOBLAR

1. 
   D 11 A 21 a₁/a₂=-m₂/m₁
   
2. 
   A 12 C 22 F _m.q=mv²/R
   
3. 
   C 13 E 23 4 marta ortadi
   
4. 
   A 14 B 24 4 marta ortadi
   
5. 
   B 15 B 25 kuch
   
6. 
   A 16 C
   
7. 
   B 17 A
   
8. 
   E 18 to`g`ri proporsional
   
9. 
   D 19 F₁=-F₂
   
10. 
    E 20 aylanma markaziga
    

Fizika 7-sinf I- variant.


1. Tashqi kuch ta’sirida jismlarning shakli va hajmi o`zgarishi…........deyiladi.
A) ko`chish, B)trayektoriya, C)tezlik, D)deformatsiya,
2. Guk qonuni formulasi qaysi javobda to`g`ri ko`rsatilgan?
A)F_el=-m·g, B)F_el=-k^. ∆l, C)F_el=-m^. a, D)F_el=- ,
3. 2 N kuch ta’sirida 10 sm ga uzaygan rezinaning bikrligini toping.
A)20 , B)0,2 , C) 20 , D) 8 N^. sm,
4. Butun olam tortishish qonuni qaysi olim tomonidan kashf etilgan?
A)Robert Guk, B)Lomonosov, C)Isaak Nyuton D)Arximed
5. Jismlarning massalari 2 marta kamayganda ular orasidagi o’zaro ta’sir kuchi qanday o’zgaradi?
A)2 marta ortadi, B)2 marta kamayadi, C)o’zgarmaydi D)4 marta ortadi
6.Massalari 1 kg dan bo’lgan ikki jisim orasidagi masofa 1m bo’lsa, ular qanday kuch bilan o’zaro ta’sirlashadi. (G=6,67^.10 )
A)6,67^. 10 N, B)667^. 10^-5 N, C)1N, D)0,5N,