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UNIVERSITY OF MONTENEGRO INSTITUTE OF FOREIGN LANGUAGES ENGLISH LANGUAGE TEST – final Name ________________________ Index _______ Faculty ____________________ SECTION A Task 1 Translate the following sentences from English. 1. Since the distance between the Zeeman sub-levels is proportional to the magnetic field, this effect is used by astronomers to measure the magnetic field of the Sun and other stars. ________________________________________________________________________________________ __________________________________________________________________________________________________________________ 2. According to the usual rules of quantum mechanics, the actual state of the electron may be any superposition of these states. This explains also why the choice of z-axis for the directional quantization of the angular momentum vector is immaterial. __________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________ 3. Werner Heisenberg's matrix mechanics was the first successful attempt at replicating the observed quantization of atomic spectra. Later in the same year, Schrödinger created his wave mechanics. __________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________ 4 Prior to the emergence of quantum mechanics as a separate theory, the mathematics used in physics consisted mainly of formal mathematical analysis, beginning with calculus, and increasing in complexity up to differential geometry and partial differential equations. __________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________ 5. For simplicity, consider a system composed of two identical particles. As the particles possess equivalent physical properties, their state vectors occupy mathematically identical Hilbert spaces. ____________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________________ Task 2 5 Explain the following: 1. Infinite square well 2. eigenvalues 3. angular momentum 4. wavefunction 5. particle 5 Task 3 Describe hydrogen atom using your own words. 10 Task 4 Read the passage and fill in the gaps. In other words, symmetric and antisymmetric states are essentially unchanged under the exchange of __________ labels: they are only multiplied by a __________ of +1 or −1, rather than being "rotated" somewhere else in the Hilbert ___________. This indicates that the particle labels have no physical __________, in agreement with our earlier discussion on indistinguishability. We have mentioned that P is Hermitian. As a result, it can be regarded as an observable of the system, which means that we can, in principle, perform a measurement to find out if a state is symmetric or antisymmetric. Furthermore, the equivalence of the particles indicates that the Hamiltonian can be written in a symmetrical form, such as well particle factor eigenstate space function meaning set equivalence order 5 Task 5 Explain Zeeman effect. 5 SECTION B Task 6 Hypothesizing Rewrite each sentence so it has a similar meaning to the first. Use the word in bold. 1. I am sorry I didn’t invite him to the party. wish ______________________________________________________________________ 2. I regret saying that to her. If only ______________________________________________________________________ 3. Why weren’t you watching the road? should ______________________________________________________________________ 4. I don’t want you to tell her. ‘d rather _____________________________________________________________________ 5. I shouldn’t have hit him. Wish _____________________________________________________________________ 6. I don’t like it when she stays out so late. Wish _____________________________________________________________________ Conditionals Put the verb in brackets into the correct tense to form the first, second, third, or zero conditional. 7. If I still ____________ (feel) sick, I ____________ (not go) on holiday next weekend. ______________________________________________________________________________ 8. You make such delicious chocolate cakes! If you ____________ (sell) them, you ____________ (make) a fortune. ______________________________________________________________________________ 9. Hello, Liz. Are you still looking for Pat? If I ____________ (see) her, I ____________ (tell) her you want to speak to her. ______________________________________________________________________________ Expressing criticism Rewrite the sentences so that they express criticism. 10. My dad mends his motorbike in the living room. ______________________________________________________________________________ 11. My brother leaves cap off the toothpaste. ______________________________________________________________________________ 12. My sister often borrows my clothes without asking. ______________________________________________________________________________ 13. Uncle Tom smokes cigars in the kitchen. ______________________________________________________________________________ 14. My grandpa used to smoke tobacco in bed. ______________________________________________________________________________ 15. Our great-grandma didn’t use to turn on her hearing aid. ______________________________________________________________________________ Questions Write questions for the words underlined. 16. Maria did not come to the meeting because she was sick. 17. She eats a lot of fruit. 18. Jim did not go to work yesterday. 19. I will have to borrow some money. 20. Tom meets someone every day. 21. Someone lives in that house. Negatives Complete the sentence with a negative auxiliary. 22. Jackie speaks fluent French but I ____________. 23. We wanted to leave the party, but Fred ____________. 24. I’ve been to America but my parents ____________. 25. I thought Volvos were made in Austria, but they ____________. 26. They said the weather would be nice today, but it ____________. 27. I am going to give up smoking, but my girlfriend ____________. 30 Total 60