Elements Of Remote Sensing(Civil Engineering ) Questions and Answers

Question 1. The phase difference of the waves 1 and 2 at A in the given figure is:
  1.    $$\frac{\pi }{4}$$
  2.    $$\frac{\pi }{2}$$
  3.    $$\pi $$
  4.    $$\frac{{3\pi }}{2}$$
Explanation:-
Answer: Option B. -> $$\frac{\pi }{2}$$
Question 2. While propagating through homogeneous, isotropic media,
  1.    Directions of both the fields are orthogonal
  2.    Both the fields are at right angles to the direction of propagation
  3.    Both (A) and (B)
  4.    Neither (A) nor (B)
Explanation:-
Answer: Option C. -> Both (A) and (B)
Question 3. The optical property of a water body depends on:
  1.    Absorption by the dissolved material
  2.    Absorption by the suspended particulate matter
  3.    Scattering by the suspended particulate matter
  4.    All of these
Explanation:-
Answer: Option D. -> All of these
Question 4. Which one of the following factors does not affect the scale of the air photographs?
  1.    Focal length
  2.    Flying height
  3.    Ground elevation
  4.    None of these
Explanation:-
Answer: Option D. -> None of these
Question 5. The infrared portion of EMR lies between
  1.    0.4 - 0.7 μm
  2.    0.5 mm to 1 μm
  3.    0.7 - 1.3 μm
  4.    0.7 to 14 μm
Explanation:-
Answer: Option D. -> 0.7 to 14 μm
Question 6. Pick up the correct statement from the following:
  1.    The surface defined by the locus of points having same phase, is called a wave front
  2.    The wave whose surface of constant phase are parallel planes, is known as a plane wave
  3.    The relative phase difference between the waves is important and not the absolute phase of a point on the wave
  4.    All of these
Explanation:-
Answer: Option D. -> All of these
Question 7. Pick up the correct statement from the following:
  1.    The refractive index of a medium varies according to the wavelength of the radiation
  2.    The variation of the refractive index with wave length, is called dispersion
  3.    The splitting of colors of white light by passing through a prism is caused due to dispersion
  4.    All of these
Explanation:-
Answer: Option D. -> All of these
Question 8. 'A time varying electric field produces a magnetic field.' This phenomenon is called:
  1.    Hertz's law
  2.    Ampere Maxwell's law
  3.    Faraday's law
  4.    Kirchoff’s law
Explanation:-
Answer: Option B. -> Ampere Maxwell's law
Question 9. Pick up the correct statement from the following:
  1.    Topology describes the geometric characteristic of objects which do not change under transformations and are independent of any coordinate system
  2.    Topological characteristics of an object are independent of scale measurement
  3.    The three elements of topology are adjacency, containment, and connectivity
  4.    All of these
Explanation:-
Answer: Option D. -> All of these
Question 10. Pick up the correct statement from the following:
  1.    When the electric field oscillates in the direction of the electric vector, a plane polarised wave is formed
  2.    When the electric vector is in the plane of incidence, vertical polarisation is formed
  3.    When the electric vector is at right angles to the plane of incidence, horizontal polarization wave is formed
  4.    All of these
Explanation:-
Answer: Option D. -> All of these
© Lakshya_Education.com, All Right Reserved.
Contact Us services