d. 4.43 36. Which of the following forms of radiation consists of positively cha

Question

d. 4.43 36. Which of the following forms of radiation consists of positively charged particles? c, d, none ofthese 37. Which of the following forms of radiation is identical to the nucleus of a helium atom? c.y d. positron 38. Which of the following forms of radiation is the most penetrating? c.y d. positron 39. Which of the following statements is true of electromagnetic radiation? a. All electromagnetic radiation has the same energy b. As the wavelength of the radiation increases, the energy of the radiation decreases. c. As the wavelength of the radiation increases, the energy of the radiation increases. d. There is no specific relationship between wavelength and energy. 40. Which of the following statements is true of artificially created isotopes? a. All artificially created isotopes are stable. b. All artificially created isotopes are unstable. c. Most artificially created isotopes are stable. d. Most artificially created isotopes are unstable. 41. Transmutation is caused by which of the following radioactive processes? a, emission c. both a and b b, emission d. neither a nor b 42. Which of the following affects the half-life of a radioactive sample? a. the age of sample c. the temperature of the sample b. the size of the sample d. none of these 43. Krypton-85 has a half-life of 10 years. Approximately what percentage of K-85 produced from the Chemoby accident in 1986 still remains radioactive in 2016? a, 25% c, 6% b, 12.5% d, 3%

Explanation / Answer

Ans(36) alpha radiation consists of positive charged particles . option A

Ans(37) alpha radiation is identical to the nucleus of a helium atom.alpha particle consists of two protons and two neutrons bound together into a partical identical to He nucleus option A

Ans (38) gamma radiation is most penetrating because these are highly energetic waves option C

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