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MCQs

Total Questions : 687 | Page 5 of 69 pages
Question 41. Which one of the following statement is incorrect regarding the electromagnetic radiation?
  1.    These are produced by the motion of electric charge
  2.    The oscillation of charged particles sets up changing electric fields
  3.    The changing electric fields induce the changing magnetic fields in the surrounding medium
  4.    None of these
 Discuss Question
Answer: Option D. -> None of these
Question 42. Which one of the following helps to identify the objects on the earth surface?
  1.    Atmospheric window
  2.    Signature
  3.    Radiometric error
  4.    None of these
 Discuss Question
Answer: Option B. -> Signature
Question 43. In the given figure the phase of
  1.    Crest A is π/2
  2.    B crossing is π
  3.    Trough C is 3π/2
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Question 44. The interaction of the electromagnetic radiation produced with a specific wave length to illuminate a target on the terrain for studying its scattered radiance, is called:
  1.    Passive remote sensing
  2.    Active remote sensing
  3.    Neutral remote sensing
  4.    None of these
 Discuss Question
Answer: Option B. -> Active remote sensing
Question 45. The remote sensing techniques applied for the earth's surface features, is generally confined to the following wave lengths:
  1.    0.4 to 1.3, 1.5 to 1.8, 2.2 to 2.6 μm
  2.    2.2 to 2.6, 3.0 to 3.6, 4.2 to 5.0 μm
  3.    4.2 to 5.0, 7.0 to 15.0 μm and 1 cm to 30 cm
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Question 46. Orbital radius of GPS satellites is approximately:
  1.    15,200 km
  2.    26,600 km
  3.    18,400 km
  4.    36,000 km
 Discuss Question
Answer: Option B. -> 26,600 km
Question 47. Spatial variation in horizontal and vertical directions is caused due to:
  1.    Physical weathering of rocks
  2.    Chemical weathering of rocks
  3.    Biological weathering of rocks
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Question 48. Which one of the following quantities forms the basis of radiometry?
  1.    Radiant energy (Q)
  2.    Radiant flux (φ)
  3.    Radiant intensity (I)
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Question 49. Which one of the following statements is correct?
  1.    During the day, earth reflects solar radiation
  2.    During the day, earth reflects both solar radiations the emission from its surface
  3.    During the night, earth emits radiation from its surface
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Question 50. The arrangement of terrain features which provides attributes: the shape, size and texture of objects, is called:
  1.    Spectral variation
  2.    Spatial variation
  3.    Temporal variation
  4.    None of these
 Discuss Question
Answer: Option B. -> Spatial variation

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