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MCQs

Total Questions : 71 | Page 1 of 8 pages
Question 1. Which of the following can be changed while interaction of EM wave with a surface?
  1.    Intensity
  2.    Diffraction
  3.    Wave length
  4.    Direction
 Discuss Question
Answer: Option B. -> Diffraction
Answer: (b).Diffraction
Question 2. Which among the following is not a phenomenon in case of interaction of EM waves on earth surface?
  1.    Reflection
  2.    Absorption
  3.    Transmission
  4.    Refraction
 Discuss Question
Answer: Option D. -> Refraction
Answer: (d).Refraction
Question 3. Which of the following indicates a volume phenomenon?
  1.    Refraction
  2.    Reflection
  3.    Transmission
  4.    Diffraction
 Discuss Question
Answer: Option C. -> Transmission
Answer: (c).Transmission
Question 4. Determine the energy of the wave length, if the reflected, absorbed and transmitted energies were given as 56J, 24J and 7J respectively.
  1.    87J
  2.    78J
  3.    89J
  4.    17J
 Discuss Question
Answer: Option A. -> 87J
Answer: (a).87J
Question 5. Find the value of reflectance if the reflected and incident energies are given as 43J and 87J.
  1.    0.94
  2.    0.42
  3.    0.99
  4.    0.49
 Discuss Question
Answer: Option D. -> 0.49
Answer: (d).0.49
Question 6. What will be the value of absorbance, if the absorbed and incident energies are given as 67J and 109J respectively?
  1.    0.16
  2.    0.61
  3.    0.69
  4.    0.72
 Discuss Question
Answer: Option B. -> 0.61
Answer: (b).0.61
Question 7. Find the transmittance, if the transmitted and incident energies are given as 156J and 987J respectively.
  1.    0.51
  2.    0.45
  3.    0.15
  4.    0.5
 Discuss Question
Answer: Option C. -> 0.15
Answer: (c).0.15
Question 8. What will be reflectance value if the possess an emissivity of 56.
  1.    55
  2.    50
  3.    54
  4.    52
 Discuss Question
Answer: Option A. -> 55
Answer: (a).55
Question 9. When emissivity is zero, what will be the value of reflectance?
  1.    One
  2.    Zero
  3.    Ten
  4.    Not equal to one
 Discuss Question
Answer: Option D. -> Not equal to one
Answer: (d).Not equal to one
Question 10. Generally, the value of reflectance varies from __________
  1.    10-20
  2.    0-10
  3.    0-1
  4.    0-0.5
 Discuss Question
Answer: Option C. -> 0-1
Answer: (c).0-1

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