Qormaatilee darban

Qormaata galuumsa Fiiziksii, bara 2005 A.L.I (2013)

Gaaffilee dhugaa qormaata galuumsa yunivarsiitii kutaa 12 kan Fiiziksii, akkuma barattoonni bara 2005 A.L.I itti fudhatanitti. Tokkoon tokkoon gaaffii deebii sirrii fi ibsa qaba.

Bilisaan shaakaluu jalqabaa Waraqaa gaaffii

Damee saayinsii uumamaa
Eenyutu fudhata
2005 A.L.I (2013)
Bara qormaataa
Gaaffilee 39 deebii waliin
Kuusaa kana keessa

Gaaffilee qormaata kanaa yaalaa

Deebii banuun dura tokkoon tokkoon gaaffii ofii keessaniin deebisaa. Ibsi gara kutaa kitaaba barnootaa sirriitti waan qajeelchuuf, yeroo gaaffii dogoggortan fuula kam irra deebi'uu akka qabdan ni beektu.

Gaaffii 1

Which of the following is correct about the meaning of Photon?

A.quantum of matter
B.positively charged particle
C.negatively charged particle
D.quantum of light

Deebii fi ibsa ilaalaa

Deebii: D quantum of light

Maaliif

Light comes in packets of energy called photons, and one photon carries the energy \(E = hf\). A photon has no charge and no rest mass, so it is a packet of electromagnetic energy rather than a piece of matter. That makes D correct. Option A is tempting because the word quantum is used elsewhere for matter as well, but the smallest unit of matter is a particle such as an electron, and a photon is not made of matter.

Gaaffii 2

Consider a series RC circuit for which \(R = 1.0\,\mathrm{M\Omega}\), \(C = 5\,\mu\mathrm{F}\) and \(\varepsilon = 30\,\mathrm{V}\). What is the time constant of the circuit and the maximum charge on the capacitor after the switch is closed respectively?

A.5 seconds, 150 \(\Omega\)C
B.7 seconds, 155 \(\Omega\) C
C.10 seconds, 160 \(\Omega\)C
D.9 seconds, 135 Mc

Deebii fi ibsa ilaalaa

Deebii: A 5 seconds, 150 \(\Omega\)C

Maaliif

The time constant of an RC circuit is \(\tau = RC\), so \(\tau = (1.0\times10^{6}\,\Omega)(5\times10^{-6}\,\mathrm{F}) = 5\) s. Once the capacitor is fully charged no current flows and the whole 30 V sits across it, so \(Q_{max} = C\varepsilon = (5\times10^{-6})(30) = 1.5\times10^{-4}\) C, which is 150 microcoulombs. Both numbers in option A come out of those two rules. Option C is what you reach if the prefixes are not tracked: the \(10^{6}\) of the megohm and the \(10^{-6}\) of the microfarad cancel exactly, so the time constant is 5 s and not 10 s.

Gaaffii 3

What is the direction with which a fish must push the water with its fins in order to propel eastward?

A.eastward
B.upward
C.westward
D.downward

Deebii fi ibsa ilaalaa

Deebii: C westward

Maaliif

Newton's third law says forces come in pairs of equal size and opposite direction. The fins push on the water, and the water pushes back on the fish with the same force the other way. To be pushed east, the fish has to push the water west, so C is correct. Option A is the usual trap: pushing the water east would send the fish west.

Gaaffii 6

Two non-zero vectors \(\vec{A}\) and \(\vec{B}\) are related by \(\vec{A} = c\vec{B}\) where c is a scalar. If the two vectors have opposite directions, then one of the following is true about c?

A.c is a positive number
B.c is a negative number
C.\(c = 1\)
D.\(c = 0\)

Deebii fi ibsa ilaalaa

Deebii: B c is a negative number

Maaliif

Writing \(\vec{A} = c\vec{B}\) means \(\vec{A}\) lies along the same line as \(\vec{B}\). A positive \(c\) keeps the direction and only changes the length, while a negative \(c\) turns the vector around. Opposite directions therefore force \(c\) to be negative. Option D fails because \(c = 0\) would make \(\vec{A}\) the zero vector, and the question says both vectors are non zero.

Gaaffii 7

On which of the following does the induced emf in a coil NOT depend when a magnet is inserted into it?

A.resistance of the coil
B.number of turns of the coil
C.speed approach of the magnet
D.magnetic moment of the magnet

Deebii fi ibsa ilaalaa

Deebii: A resistance of the coil

Maaliif

Faraday's law gives the induced emf as \(\varepsilon = -N\dfrac{\Delta\Phi}{\Delta t}\). That expression contains the number of turns, how fast the flux changes (so the speed of the magnet) and how strong the magnet is, but resistance appears nowhere in it. Resistance decides the induced current through \(I = \varepsilon/R\), not the emf itself, so A is the one the emf does not depend on. Option C looks like a safe thing to rule out, yet a faster magnet changes the flux more quickly and does raise the emf.

Gaaffii 8

A wave have a speed of 50m/s and a wavelength of 25,000m. What is the frequency of the wave?

A.\(2.0 \times 10^{-3}\) HZ
B.\(5.0 \times 10^{-2}\) HZ
C.\(6.0 \times 10^{1}\) HZ
D.\(1.8 \times 10^{6}\) HZ

Deebii fi ibsa ilaalaa

Deebii: A \(2.0 \times 10^{-3}\) HZ

Maaliif

Use \(v = f\lambda\), so \(f = \dfrac{v}{\lambda} = \dfrac{50}{25\,000} = 2.0\times10^{-3}\) Hz. A wavelength of 25 km is enormous next to a speed of 50 m/s, so one whole wave takes about 500 seconds to pass and the frequency has to be a very small number. Options C and D can be dropped on that reasoning alone, since a frequency of 1 Hz or more would mean at least one full wave every second.

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Gaaffilee 39 kuusaa kana keessa jiran hunda akka waraqaa qormaataa maxxanfameetti, furtuu deebii ibsa 39 waliin immoo akka faayilii lammaffaatti. Maxxansaa yookiin daataa malee dubbisaa.

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Herregni Temari bilisaa qormaata Fiiziksii guutuu fi kan waggoota biroo hunda qormaatilee fakkeenyaa sa'aatiin daangeffaman godhee qabxii battalumaa waliin isiniif kenna. Bilbila kamiyyuu irratti, walitti hidhamiinsa laafaa irrattillee ni hojjeta.

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Qormaatilee Fiiziksii kan waggoota biroo

2018 A.L.I (2026)2017 A.L.I (2025)2016 A.L.I (2024)2015 A.L.I (2023)2014 A.L.I (2022)

Qormaata kana taa'uu dura Fiiziksii qayyabadhu

Yaadannoon gabaabaan Fiiziksii kutaa 12 kaardii 28 qaba. Tokkoon tokkoon boqonnaa boqonnaadhaan kitaaba biyyaalessaa irraa qophaa'ee seericha, mallattoowwan isaa maal bakka akka bu'an fi dogoggora qabxii nama dhabsiisu ni ibsa.

Yaadannoo Fiiziksii bani

Kunneen gaaffilee dhugaa qormaata galuumsa Fiiziksii bara 2005 A.L.I ti?

Eeyyee. Qormaata galuumsa yunivarsiitii biyyaalessaa kan Fiiziksii barattoonni bara 2005 A.L.I (2013) fudhatan irraa fudhataman. Kuusaan keenya gaaffilee isaa 39 qaba; tokkoon tokkoon isaanii deebii fi ibsa gara kitaaba barnootaatti qajeelchu qabu.

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Lakkoofsa bilbilaatiin herrega bilisaa banadhaa. Qormaatichi guutuun qormaata fakkeenyaa sa'aatiin daangeffame ta'ee qabxii battalumaa kenna; fooyya'iinsi gargaaraa AI ji'atti qarshii 199 kan ta'e waan isin jalaa darbe hunda isinii ibsa.

Qormaata Fiiziksii bara 2005 A.L.I PDF dhaan buufachuu nan danda'aa?

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