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MCQs

Total Questions : 68 | Page 5 of 7 pages
Question 41. For obtaining useful information from replicas, it is obtained from
  1.    cut face of fibre
  2.    fibre surface made up of other suitable material
  3.    other fibre surface replicated from original
  4.    all of above
 Discuss Question
Answer: Option D. -> all of above
Answer: (d).all of above
Question 42. In scanning electron microscope method, electrons are picked up by
  1.    collector
  2.    scanner
  3.    electron tray
  4.    container
 Discuss Question
Answer: Option A. -> collector
Answer: (a).collector
Question 43. Atomic force microscopy consists of
  1.    probe
  2.    minute tip
  3.    cantilever arm rests
  4.    all of above
 Discuss Question
Answer: Option D. -> all of above
Answer: (d).all of above
Question 44. Sizes of spot in scanning electron microscopy has been
  1.    reduced
  2.    increased
  3.    constant
  4.    variable
 Discuss Question
Answer: Option A. -> reduced
Answer: (a).reduced
Question 45. Polymers of which fibers are composed may also be examined as
  1.    thick films
  2.    thin films
  3.    moderate films
  4.    film of different sizes
 Discuss Question
Answer: Option B. -> thin films
Answer: (b).thin films
Question 46. Specimens used in electron microscopy must be less than
  1.    0.1 micrometer thick
  2.    0.2 micrometer thick
  3.    0.25 micrometer thick
  4.    0.3 micrometer thick
 Discuss Question
Answer: Option A. -> 0.1 micrometer thick
Answer: (a).0.1 micrometer thick
Question 47. Scanning electron microscope has an advantage of
  1.    smaller depth of focus
  2.    larger depth of focus
  3.    small particle focus
  4.    bigger particle focus
 Discuss Question
Answer: Option B. -> larger depth of focus
Answer: (b).larger depth of focus
Question 48. For getting internal details another technique used includes examination of fragments that are left behind after
  1.    mechanical degradation
  2.    chemical degradation
  3.    both a and b
  4.    fibre degradation
 Discuss Question
Answer: Option C. -> both a and b
Answer: (c).both a and b
Question 49. In scanning electron microscope method, image formed looks like an ordinary
  1.    image
  2.    picture
  3.    enlarged image
  4.    light spectrum
 Discuss Question
Answer: Option C. -> enlarged image
Answer: (c).enlarged image
Question 50. Technique in which an image is formed from a particular selected band of diffracted electrons is called as
  1.    Dark field electron microscopy
  2.    Light field electron microscopy
  3.    Dull field electron microscopy
  4.    Field electron microscopy
 Discuss Question
Answer: Option A. -> Dark field electron microscopy
Answer: (a).Dark field electron microscopy

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