Modern Physics Ques 14
- In the following, Column I lists some physical quantities and the Column II gives approximate energy values associated with some of them. Choose the appropriate value of energy from Column II for each of the physical quantities in Column I and write the corresponding letters A, B, C etc., against the number (i), (ii) and (iii) etc., of the physical quantity. In the answer books in your answer the sequence of column I should be maintained :
(1997, 4M)
| Column I | Column II | ||
|---|---|---|---|
| (i) | Energy of thermal neutrons | (A) | $0.025 \mathrm{eV}$ |
| (ii) | Energy of X-ray | (B) | $0.5 \mathrm{eV}$ |
| (iii) | Binding energy per nucleon | (C) | $3 \mathrm{eV}$ |
| (iv) | Photoelectric threshold of a metal |
(D) | $20 \mathrm{eV}$ |
| $(\mathrm{E})$ | $8 \mathrm{MeV}$ | ||
| (F) | $10 \mathrm{keV}$ |
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Answer:
Correct Answer: 14.(i) $\mathrm{A}$ (ii) $\mathrm{F}$ (iii) $\mathrm{E}$ (iv) $\mathrm{C}$
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