Yaadannoo boqonnaa fi gaaffii shaakalaa
Wanti fuula kana irra jiru hundi boqonnaa 7 kitaaba Fiizikii kutaa 11 tiif: wanta boqonnaan haguugu, yaadannoo gabaabaa, gaaffii shaakalaa deebii isaanii waliin, fi viidiyoo barnootaa bakka jirutti.
Kaardiiwwan fuula Fiizikii kutaa 11 irratti boqonnaa kana jala galmaa'an. Tokko tokkoon bani.
| Gosa kubbaa | Qaamolee baasan | Jijjiirama A | Jijjiirama Z |
|---|---|---|---|
Yoom akka itti fayyadamtu
Yeroo equation kubbaa barreessitu ykn nuukleasii intala nuukleasii haadhaa irraa argattu fayyadamaa.
Of eeggadhu
Beta- Z tokkoon ol guddisa, A garuu hin jijjiiru; neutroon gara protoonii fi elektiroonii jijjiirama. Beta+ Z tokkoon hir'isa. Kubbaa betaa keessatti A hin jijjiirin.
Grade 11 Physics, fuula 287 irraa eegalee irraa qophaa'e; osoo hin ba'in dura yeroo lama mirkanaa'e
Yoom akka itti fayyadamtu
Humna walitti hidhamuu waliigalaa booda, humna nuukleyoonii tokkoo yeroo gaafatamu fayyadamaa.
Of eeggadhu
Lakkoofsa baay'ina nuukleyoonii A irratti qoodi, lakkoofsa atoomii Z irratti hin qoodin. Oksijiin-16 irratti 16 qoodi, 8 utuu hin taane. Fakkeenya 7.2 118.808 MeV gara 16 qooda.
Grade 11 Physics, fuula 287 irraa eegalee irraa qophaa'e; osoo hin ba'in dura yeroo lama mirkanaa'e
Yoom akka itti fayyadamtu
Yeroo baay'inni nuukleyoonii jalqabaa fi faayidaan kubbaa ykn yeroo walakkaa kennamee, lakkoofsi hafu yeroo t booda akkam akka ta'u gaafatamu fayyadamaa.
Of eeggadhu
λ s^-1 waan ta'eef t sekondii ta'uu qaba; waggoota jijjiiraa. Yeroo walakkaa t_{1/2} = 0.693/λ dha; yeroo nuukleyoonii walakkaan kubbaan, yeroo jiraachuu nuukleasii miti.
Grade 11 Physics, fuula 287 irraa eegalee irraa qophaa'e; osoo hin ba'in dura yeroo lama mirkanaa'e
Gaaffii filannoo 10 boqonnaa kana irratti barreeffaman, tokkoon tokkoon isaanii deebii fi sababa qabu. Deebii banuu dura yaali. Gaaffiin kun Ingiliffaa tiin.
Gaaffii 1
According to the textbook, which subatomic particles make up the atomic nucleus?
Deebii: A Protons and neutrons
Sababa
The atomic nucleus consists of positively charged protons and electrically neutral neutrons held together by the strong nuclear force.
Gaaffii 2
What is the empirical formula used to calculate the radius R of a nucleus with mass number A?
Deebii: C R = R0 A^(1/3)
Sababa
The nuclear radius is given by R = R0 A1/3, where R0 is approximately 1.2 fm (1.2 × 10-15 m).
Gaaffii 3
Which statement correctly defines isotopes of an element?
Deebii: B Atoms with the same number of protons but different numbers of neutrons
Sababa
Isotopes are members of a family of an element that have the same number of protons (same atomic number) but different numbers of neutrons.
Gaaffii 4
According to the textbook, how many megaelectron volts (MeV) are equivalent to 1 atomic energy unit (aeu)?
Deebii: D 931.1 MeV
Sababa
The text states directly that 1 aeu = c2 × 1 amu = 931.1 MeV.
Gaaffii 5
At a range of 10-15 m, approximately how many times stronger is the strong nuclear force compared to electromagnetism?
Deebii: B 100 times
Sababa
At a range of 10-15 m, the strong force is roughly 100 times as strong as electromagnetism, 106 times as strong as the weak force, and 1038 times as strong as gravitation.
Gaaffii 6
Which teaching hospital in Addis Ababa is highlighted in the textbook for using radioisotopes to treat cancer?
Deebii: A Black Lion Specialized Hospital
Sababa
The textbook specifically notes that the Black Lion Specialized Hospital under Addis Ababa University uses radioisotopes for cancer treatment.
Gaaffii 7
When uranium-238 undergoes alpha decay, it emits an alpha particle (42He). What are the mass number A and atomic number Z of the daughter thorium (Th) nucleus?
Deebii: C A = 234, Z = 90
Sababa
In alpha decay, the mass number decreases by 4 (238 - 4 = 234) and the atomic number decreases by 2 (92 - 2 = 90), giving 23490Th.
Gaaffii 8
A sample contains 400 mg of strontium-90 (half-life = 38.1 years). How many milligrams remain after 190.5 years (5 half-lives)?
Deebii: D 12.5 mg
Sababa
After 5 half-lives (190.5 / 38.1 = 5), the remaining mass is 400 mg / (25) = 400 mg / 32 = 12.5 mg.
Gaaffii 9
Two nuclei have mass numbers in the ratio 27 : 125. What is the ratio of their nuclear radii?
Deebii: B 3 : 5
Sababa
Because R is proportional to A1/3, the ratio of the radii is (27)1/3 : (125)1/3 = 3 : 5.
Gaaffii 10
In the fission reaction 235U + 10n → XY + 139Cs + 2 10n + energy, what is the mass number X?
Deebii: A 95
Sababa
Balancing mass numbers: 235 + 1 = X + 139 + (2 × 1), which gives 236 = X + 141, so X = 95 (corresponding to Rb-95).
Appiin boqonnaa kana irratti gaaffii 12 qaba; utuu hojjettuu ni sirreessa. Kan asii jiran 10 jalqabaa ti.
Kitaaba barataa Fiizikii kutaa 11 guutuu, PDF bilisaan.
Maxxansa Ministeera Barnootaa, Ingiliffaa, Fuula 338
Temari boqonnaa kana gara shaakala yeroon daangeffametti jijjiira; utuu hojjettuu ni sirreessa; wanti si hin galinis barsiisaa AI tiin ni ibsama.
Bilisaan jalqabi
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