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MCQs

Total Questions : 57 | Page 5 of 6 pages
Question 41. Photomultipliers used in Liquid scintillation detectors are a source of instability.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 42. A quench curve can be constructed by plotting the counting efficiency versus ____________
  1.    Q-number
  2.    Quench factor
  3.    H-number
  4.    Disintegrations
 Discuss Question
Answer: Option C. -> H-number
Answer: (c).H-number
Question 43. Which of the following effects transfers all the energy of the gamma ray to an electron in the inner orbit of the atom of the absorber?
  1.    Photoelectric effect
  2.    Compton effect
  3.    Pair production
  4.    Collision effect
 Discuss Question
Answer: Option A. -> Photoelectric effect
Answer: (a).Photoelectric effect
Question 44. ‘When nuclear radiations pass through, gas ionization is produced.’ This is the principle of which of the following detectors?
  1.    Proportional counter
  2.    Flow counter
  3.    Geiger Muller counter
  4.    Scintillation counter
 Discuss Question
Answer: Option C. -> Geiger Muller counter
Answer: (c).Geiger Muller counter
Question 45. Which of the following is not a type of radiation detectors?
  1.    Geiger Muller counter
  2.    Proportional counter
  3.    Semiconductor detector
  4.    Flame emission detector
 Discuss Question
Answer: Option D. -> Flame emission detector
Answer: (d).Flame emission detector
Question 46. Which of the following acts as quenching gas in Geiger Muller counter?
  1.    Alcohol
  2.    Argon gas
  3.    Krypton
  4.    Hydrogen
 Discuss Question
Answer: Option A. -> Alcohol
Answer: (a).Alcohol
Question 47. The basic unit used to describe the energy of a radiation particle is curie.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 48. When X-ray enters the solid state detector it produces ion pair rather than electron-hole pair.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 49. Liquid samples must be counted using ionization chamber by placing them in which of the following?
  1.    Test tube
  2.    Curvette
  3.    Ampoules
  4.    Flask
 Discuss Question
Answer: Option C. -> Ampoules
Answer: (c).Ampoules
Question 50. Liquid Scintillators are used for which of the following materials?
  1.    Low energy beta materials
  2.    High energy beta materials
  3.    Low energy gamma materials
  4.    High energy gamma materials
 Discuss Question
Answer: Option A. -> Low energy beta materials
Answer: (a).Low energy beta materials

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