Kvant fizikasi. Atom va yadro fizikasi. Elementar zarralar

Question 1

$^{209}_{84}Po$ yadrosining tarkibini aniqlang.

Accepted Answer

125 ta neytron, 84 ta proton

Answer

84 ta elektron, 209 ta neytron

Answer

84 ta elektron, 125 ta neytron

Answer

209 ta nuklon, 84 ta neytron

Question 2

Harakatdagi jismning massasi $m=(5/3)m_0$ ga teng. $m_0$ – jismning tinchlikdagi massasi. Jismning tezligini toping.

Accepted Answer

0,8$c$

Answer

0,4$c$

Answer

0,5$c$

Answer

0,6$c$

Question 3

$E$ energiyali fotonlar oqimi chiqish ishi 3 eV va 5 eV bo‘lgan 2 xil metall sirtiga tushmoqda. Ulardan uchib chiqayotgan fotoelektronlarning maksimal kinetik energiyalari mos ravishda $E_1$ va $\frac{E_1}{2}$ ga teng bo‘lsa, $E_1$ ni toping (eV).

Accepted Answer

4

Answer

7

Answer

5

Answer

6

Question 4

Fotoeffektning qizil chegarasi $
u$ bo‘lgan metall sirtiga $5
u$ chastotali, qizil chegarasi $2
u$ bo‘lgan metall sirtiga esa $4
u$ chastotali fotonlar tushmoqda. Uchib chiqqan fotoelektronlarning maksimal kinetik energiyalari mos ravishda $E_1$ va $E_2$ bo‘lsa, $\frac{E_1}{E_2}$ ifodaning qiymatini toping.

Accepted Answer

2

Answer

5/4

Answer

5/2

Answer

1/2

Question 5

Quyidagi reaksiyadagi noma’lum $X$ zarrani aniqlang: ${}^{15}_{7}\mathrm{N}+{}^{1}_{1}\mathrm{H}\Rightarrow{}^{12}_{6}\mathrm{C}+X$

Accepted Answer

${}^{4}_{2}\mathrm{He}$

Answer

${}^{2}_{1}\mathrm{H}$

Answer

${}^{1}_{1}\mathrm{H}$

Answer

${}^{7}_{3}\mathrm{Li}$

Question 6

Proton, antiproton va $\gamma$-kvant berilgan. Elektr maydonda ularning qaysilari tezlanish bilan harakatlanadi?

Accepted Answer

proton va antiproton

Answer

antiproton va $\gamma$-kvant

Answer

proton va $\gamma$-kvant

Answer

faqat proton

Question 7

Vodorod atomidagi elektron 4-kvant holatidan 2-kvant holatiga o‘tdi. Nurlangan fotonning energiyasini (eV) toping.

Accepted Answer

2,55

Answer

4,15

Answer

6,82

Answer

12,38

Question 8

Litiy $^7_3Li$ yadrosidagi nuklonlarning solishtirma bog‘lanish energiyasi 5,4 MeV/nuklon. Yadroning massa defektini (kg) toping.
1 MeV $=1{,}6\cdot 10^{-13}$ J

Accepted Answer

$6{,}72\cdot 10^{-29}$

Answer

$6{,}05\cdot 10^{-14}$

Answer

$0{,}96\cdot 10^{-29}$

Answer

$6{,}05\cdot 10^{-12}$

Question 9

Vodorod atomini ionlashtirish energiyasi $E_0$. Uning asosiy holatidagi elektroni $3E_0/4$ energiyalik fotonni yutsa, qanday raqamli energetik sathga o‘tadi?

Accepted Answer

2

Answer

8

Answer

3

Answer

4

Question 10

Litiy uchun elektronlarning metalldan chiqish ishi 2,3 eV. Bu energiyaning J birligidagi qiymati qanday?

Accepted Answer

$3{,}7\cdot 10^{-19}$

Answer

$3\cdot 10^{-19}$

Answer

$4\cdot 10^{-19}$

Answer

$7{,}5\cdot 10^{-19}$

Kvant fizikasi. Atom va yadro fizikasi. Elementar zarralar

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