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Home Civil Engineering Elements of Remote Sensing Comments

  • Question
  • The entire range of the electromagnetic spectrum spans a large spectrum of wave lengths varying from:


  • Options
  • A. 10-10 to 106 m
  • B. 10-8 to 106 m
  • C. 10-10 to 1010 m
  • D. 10-8 to 108 m

  • Correct Answer
  • 10-10 to 106


  • Elements of Remote Sensing problems


    Search Results


    • 1. Pick up the correct statement from the following :

    • Options
    • A. When the electric field oscillates in the direction of the electric vector, a plane polarised wave is formed.
    • B. When the electric vector is in the plane of incidence, vertical polarisation is formed.
    • C. When the electric vector is at right angles to the plane of incidence, horizontal polarization wave is formed.
    • D. The plane containing the incident ray and normal to the reflecting surface at the point of incidence is called the plane of incidence.
    • E. All of these
    • Discuss
    • 2. If 0 is the angle of scan measured from the nadir, the ground distance swept by the sensor IFOV is proportional to :

    • Options
    • A. sin2?
    • B. cos2?
    • C. sec2?
    • D. tan2?
    • Discuss
    • 3. The phase difference of the waves 1 and 2 at A in the given figure is :

    • Options
    • A. ?/4
    • B. ?/2
    • C. ?
    • D. 3?/2
    • Discuss
    • 4. The spectral region of the electromagnetic radiation which passes through the atmosphere without much attenuation is known as:

    • Options
    • A. ozone hole
    • B. atmospheric window
    • C. ozone window
    • D. black hole
    • Discuss
    • 5. Which one of the following errors is produced by platform characteristics of the sensor?

    • Options
    • A. altitude variation
    • B. altitude
    • C. orbit drift
    • D. All of these
    • Discuss
    • 6. The arrangement of terrain features which provides attributes: the shape, size and texture of objects, is called :

    • Options
    • A. spectral variation
    • B. spatial variation
    • C. temporal variation
    • D. None of these .
    • Discuss
    • 7. Remote sensing techniques makes use of the properties of-----emitted, reflected or diffracted by the sensed objects:

    • Options
    • A. electric waves
    • B. soundwaves
    • C. electromagnetic waves
    • D. wind waves
    • Discuss
    • 8. Electromagnetic radiation :

    • Options
    • A. produces a time varying magnetic field and vice versa
    • B. once generated, remains self-propagat-ing.
    • C. is capable to travel across space
    • D. consists of magnetic and electric fields
    • E. All of these
    • Discuss
    • 9. Which one of the following statements regarding remote sensing is correct.

    • Options
    • A. The interaction of the electromagnetic radiation with the target
    • B. The emission of electromagnetic radiation from the target
    • C. both (a) and (b)
    • D. Neither (a) nor (b)
    • Discuss
    • 10. Rayleigh's criteria for a rough surface is: (where letters carry their usual meanings).

    • Options
    • A. h > ?/? cos ?
    • B. h = ?/8 cos ?
    • C. h > ?/8 cos ?
    • D. h < ?/8 cos ?
    • Discuss


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