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Home Civil Engineering Elements of Remote Sensing Comments

  • Question
  • 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

  • Correct Answer
  • 2 L - band frequencies 


  • Elements of Remote Sensing problems


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    • 1. In sun-light water poor in phyto plank tons appears :

    • Options
    • A. deep blue
    • B. red
    • C. green
    • D. yellow
    • Discuss
    • 2. 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
    • 3. 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
    • 4. 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
    • Discuss
    • 5. 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
    • 6. 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
    • 7. In which part of the reflective optical infrared region, the effect of multiple leaves in vegetation canopy is maximum?

    • Options
    • A. The near-IR (0.7 - 1.3 ?m) region
    • B. The visible (0.4 - 0.7 ?m) region
    • C. The short wave IR (1.3 - 2.7 ?m) region
    • D. In all the above region
    • Discuss
    • 8. Fresh and pure snow reflectance

    • Options
    • A. is very high in visible region
    • B. falls off steeply in the near-IR region
    • C. remains low for longer wave lengths
    • D. All of these
    • Discuss
    • 9. With the increase of turbidity, the muddy water appears brown due to the shift of the upward radiance peak towards :

    • Options
    • A. red
    • B. green
    • C. yellow
    • D. blue
    • Discuss
    • 10. Pick up the correct statement from the following:

    • Options
    • A. Photography was developed in 1826
    • B. Balloons were used as stable platform for aerial photography in 1903
    • C. The first aerial photography from an aerocraft was made by Willeur Wright in 1909 in Italy.
    • D. All of these
    • Discuss


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