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Home Civil Engineering Elements of Remote Sensing Comments

  • Question
  • Which one of the following statements is correct?


  • Options
  • A. The ratio of the permitivity of a medium and the free space, is called relative permitivity.
  • B. Dielectric constant is a pure number and has no dimensions.
  • C. The dielectric constant of pure water is 80.
  • D. Higher the dielectric constant of a medium, the poorer is its electric conductivity.
  • E. All of these

  • Correct Answer
  • All of these 


  • Elements of Remote Sensing problems


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    • 1. Which one of the following is incorrect statement? While passing through the atmosphere, the solar radiation,

    • Options
    • A. remains unaffected
    • B. gets scattered
    • C. gets absorbed partially
    • D. None of these
    • Discuss
    • 2. Pick up the correct statement from the following:

    • Options
    • A. The wave length of gamma rays is 10-10 m
    • B. The wave length of radio rays is 106 m
    • C. The visible length occupies a small portion of the electromagntic spectrum extending roughly from 0.4 ? m to 0.7?m wave length.
    • D. All of these
    • Discuss
    • 3. The energy transported by the electromagnetic wave is proportional to :

    • Options
    • A. the altitude of the wave
    • B. the square of the altitude of the wave
    • C. the cube of the altitude of the wave
    • D. the square roof of the amplitude
    • Discuss
    • 4. Snow albedo is affected by :

    • Options
    • A. wave length
    • B. grain size
    • C. solar zenith angle
    • D. snow pack thickness
    • E. All of these
    • Discuss
    • 5. For perfect coherent radiation, which one of the following statement is correct?

    • Options
    • A. Both the waves must have single frequencies
    • B. The directions of motion of both waves are parallel.
    • C. The waves must be collimated
    • D. All of these
    • Discuss
    • 6. Which one of the following statements is correct to remote sensing?

    • Options
    • A. The basic property used to identify objects, is called signature.
    • B. The ratio of the reflected flux to incident flux is called reflectance which varies fron 0 to 1
    • C. The surface from which emergent radiance is constant in all directions is called Lambertian surface.
    • D. All of these.
    • Discuss
    • 7. Which one of the following statements is not correct?

    • Options
    • A. GIS technology is the same as traditional mapping
    • B. GIS technology is a tool box for processing maps and fundamental concepts for spatial measurement
    • C. GIS technology contains analytic capabilities for overlaying maps
    • D. GIS technology is capable to study the environmental surrondings
    • Discuss
    • 8. In sun-light water poor in phyto plank tons appears :

    • Options
    • A. deep blue
    • B. red
    • C. green
    • D. yellow
    • Discuss
    • 9. The range measurements in GPS are made with :

    • Options
    • A. 3 L - band frequencies
    • B. 2 L - band frequencies
    • C. 2 C - band frequencies
    • D. 3 C - band frequencies
    • Discuss
    • 10. Pick up the correct statement from the following:

    • Options
    • A. Electromagnetic wave is composed of electric and magnetic fields
    • B. Electric and magnetic fields of electromagnetic wave remain mutually orthogonal and transverse to the direction of propagation.
    • C. If the electromagnetic wave moves in the z-direction, its electric vector remains in the XY plane along any direction.
    • D. Polirization defines the orientation of the fields
    • E. All of these
    • Discuss


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