
2 kl. atomo sandara
Authored by Vydma vydmapet@gmail.com
Physics
1st Grade
Used 77+ times

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22 questions
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1.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Fotono energija lygi 1,1 ∙ 10-19 J. Koks jo bangos ilgis? Planko konstanta 6,63 ∙ 10-34 J ∙ s, šviesos greitis 3 ∙ 108 m/s.
18 ∙ 10-7 m.
3,3 ∙ 10-7 m.
33 ∙ 10-7 m.
330 ∙ 10-7 m.
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Kokio dažnio šviesą reikia nukreipti į platinos paviršių, kad didžiausias fotoelektronų greitis būtų lygus 3000 km/s? Elektronų išlaisvinimo iš platinos darbas lygus 10-18 J, elektrono masė 9,11 ∙ 10-31 kg .
0,769 ∙ 1015 Hz.
76,8 ∙ 1015 Hz.
7,68 ∙ 1015 Hz.
7,69 ∙ 1015 Hz.
3.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Kiek protonų Z ir neutronų N yra
fosforo atomo 3115P branduolyje?
Z = 14; N = 30.
Z = 14; N = 16.
Z = 16; N = 15.
Z = 15; N = 16.
4.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Kuo skiriasi du urano izotopai 23592U ir 23892U?
Elektronų skaičiumi.
Protonų skaičiumi.
Abu yra vienodi.
Neutronų skaičiumi.
5.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Kaip pakinta elemento eilės numeris išspinduliavus β dalelę?
Padidėja 1.
Sumažėja 1.
Nepakinta.
Teisingo atsakymo nėra.
6.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Kiek elektronų yra apvalkale elektriškai neutralaus atomo, kurio branduolyje 101 protonas ir 155 neutronai?
155.
101.
54.
256.
7.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Kas yra β spinduliai?
Protonų srautas.
Neutronų srautas.
Helio atomų branduolių srautas.
Elektronų srautas.
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