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Nikel uchun fotoeffekt qizil chegarasini aniqlang (m). Nikel uchun chiqish ishi 5 eV


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Nikel uchun fotoeffekt qizil chegarasini aniqlang (m). Nikel uchun chiqish ishi 5 eV.

A) 5 · 10–7; B) 2,3 · 10–5; C) 2,5 · 10–7; D) 1 · 10–6.


      1. Chiqish ishi 3 eV bo‘lgan metallga 5 eV energiyali fotonlar tushganda undan chiqayotgan fotoelektronlarning maksimal kinetik energiyasini aniqlang (eV).

A) 0,6; B) 2; C) 3; D) 5.


      1. Yorug‘likning to‘lqin uzunligi 10–7 m bo‘lsa, foton energiyasini aniqlang (eV). h =4 ·10–15 eV · s

A) 1; B) 2; C) 4; D) 12.


      1. Yorug‘likning to‘lqin uzunligi 220 nm bo‘lsa, fotonning massasini (kg) aniqlang.

A) 3 · 10-36; B) 1,5 · 10-36; C) 1,6 · 10-36; D) 1 · 10-35.


      1. Yorug‘likning to‘lqin uzunligi 6,63 · 10–8 m bo‘lsa, fotonning impulsini aniqlang (kg · m/s). h = 6,63 · 10–34 J · s

A) 10–26; B) 10–42; C) 10–34; D) 1,6 · 10–35.


      1. Yorug‘likning chastotasi 3 · 1015 Hz bo‘lsa, uning impulsini aniqlang (kg · m/s). h = 6,63 · 10–34 J · s.

A) 2,21 · 10–19; B) 2,21 · 10–27; C) 6,63 · 10–19; D) 6,63 · 10–27


      1. Agar fotonning impulsi 3,315 · 10–27 kg · m/s bo‘lsa, yorug‘likning chastotasni aniqlang (Hz).

A) 3 · 1014; B) 2 · 1015; C) 1,5 · 1015; D) 2 · 1014.


      1. Qizdirgichli lampochka nurlanishining o‘rtacha to‘lqin uzunligi 1,2 μm. 200 W quvvatli lampochkaning 1 sekund nurlanishidagi fotonlar sonini aniqlang. h = 6,63 · 10–34 J · s.

A) 80 · 1021; B) 2,5 · 1021; C) 1,5 · 1020; D) 1,2 · 1021.


      1. Nisbiy sindirish ko‘rsatkichi n bo‘lgan shaffof muhitda fotonning impulsi nimaga teng?



    1. nhv/c; B) nhv; C) hλ/n; D) hv/nc.
      1. Modda uchun fotoeffektning qizil chegarasi 1 · 1015 Hz bo‘lib, unga chastotasi 1 · 1015 Hz bo‘lgan yorug‘lik ta’sirida uchib chiqqan fotoelektronlarning maksimal kinetik energiyasini hisoblang. (J)

A) 6,6 · 10–19; B) 3,3 · 10–19; C) 2,2 · 10–19; D) 1,6 · 10–19.


      1. Metalldan elektronning chiqish ishi 3,3 · 10–19J bo‘lsa, fotoeffektning qizil chegarasi v0 ni toping (Hz).

A) 10–14; B) 2 · 1014; C) 5 · 1014; D) 6,6 · 1015.




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