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Energy imparted by the accelerating system = e x V, where V is the accelerating potential; and this energy is equal to the energy of the X-ray, give by hf e x V = hf ∴ V = hf/e (6.63 x 10\(^{-34}\) x 1.6 x 10\(^{16}\))/1.6 x 10\(^{-19}\) = 6.63 x 10 = 66.3V

Total internal reflection (TIR) is the optical phenomenon in which waves arrive at the interface (boundary) from one medium to another (e.g., from water to air). that is from a more optically denser medium to a less optically denser medium.

Silver halides are chemical compounds that are formed when silver reacts with halogens. They are used in photographic film and paper because they react with light to form an image. Silver chloride and silver bromate are the most sensitive to light among the three most common silver halide compounds.However, the order of sensitivity to light is in the order of their reactivity as you go down the group in the periodic table. AgCl > AgBr > AgI. The correct answer is option D

The activity series is a type of ordering system for elements, which ranks how reactive a certain element is in relation to other elements. The order of reactivity of metals is as follows, Potassium > Sodium > Lithium > Calcium > Magnesium > Aluminium > Zinc > Iron > Copper >

boat - /bəʊt/ board - /bɔːd/ bought - /bɔːt/ go - /ɡəʊ/ glory - /ˈɡlɔː.ri/

air and heir are both nouns with the same vowel sounds pronounced as /eə/

pleasure is pronounced as [ˈpleʒə], our area of emphasis is on the ''ea'' sound which goes thus ''e''. pliable--- [ˈplʌɪəb(ə)l] pleat----- [pliːt] plenary-- [ˈpliːnəri] jeopardy--- [ˈdʒepədi]. from the list of possible pronunciations above, you can see that only jeopardy [ˈdʒepədi] has the vowel sound ''e'' and it is therefore the correct answer to the question.

Thunder |ˈ\thetaʌndə| (a) prefer |prɪˈfɜː| (b) differ |ˈdɪfə| (c) confer |kənˈfɜː| (d) defer |dɪˈfɜː|

The noun tear is pronounced as /tɪə/ dare - /deə/ care - /keə/ here - /hɪə/ wear - /weə/

Both thought and theater have similar consonant sounds at the beginning. The 'th' is pronounced alike with the tip of the tongue in between the front teeth. Hence we have; thought: /\thetaɔːt/ theatre: /ˈ\thetaɪətə/

caliph; /ˈkeɪlɪf,ˈkalɪf/ powerful; /ˈpaʊəfʊl,ˈpaʊəf(ə)l/

The stress pattern of a word is the way all the syllables are stressed in it. There can be main and secondary stress, or unstressed sounds. The word SO-LU-TION has the same stress pattern as E-nor-mous as they are both stressed on the second syllable.

Honour is stressed as HO-nour. /ˈɒnə/ same as HU-man /ˈhjuːmən/

Quality is stressed on the first syllable /ˈkwɒlɪti/ A. guarantee is stressed on the third syllable /ɡar(ə)nˈtiː/ B. accepted is stressed on the second syllable /əkˈsɛptid/ C. bachelor is stressed on the first syllable /ˈbatʃələ/ D. related is stressed on the second syllable /rɪˈleɪt/

Education - e-du-CA-tion A. Duplicity - du-PLI-ci-ty B. Economics - e-co-NO-mics C. Elaborate - E-LA-bo-rate D. Conjectural - con-JEC-tu-ral Both education and economics have stress in the third syllable.