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Home Civil Engineering Elements of Remote Sensing Comments

  • Question
  • 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

  • Correct Answer
  • the square of the altitude of the wave 


  • Elements of Remote Sensing problems


    Search Results


    • 1. 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
    • 2. 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
    • 3. The semi-infinite snow albedo is proportional to the square root of the grain radius :

    • Options
    • A. in the 0.2 to 0.4 ?m wave length region
    • B. in the 0.4 to 0.8 ?m wave length region
    • C. in the 0.8 to 1.2 ?m wave length
    • D. None of these
    • Discuss
    • 4. Pick up the correct statement from the following:

    • Options
    • A. Water molecules and salt-ions in the ocean scatter the lower wave length more
    • B. An increase in the back scattering coefficient with shorter wave length gives a deep blue colour for clear oceanic water
    • C. The ratio of the upwelling irradiance just below the surface and downwelling irradiance just above the surface is called reflectance ratio.
    • D. All of these
    • Discuss
    • 5. In sun light, water rich in phytoplanktons appears :

    • Options
    • A. red
    • B. green
    • C. brown
    • D. blue
    • Discuss
    • 6. 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
    • 7. 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
    • 8. 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
    • 9. 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
    • 10. 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


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