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Home Civil Engineering Elements of Remote Sensing Comments

  • Question
  • Which one of the following relationship between the wave length (?), and frequency and the speed (C) of the electromagnetic wave is correct?


  • Options
  • A. C = v + ?
  • B. Which one of the following relationship between the wave length (?), and frequency and the speed (C)
  • C. C = v?
  • D. Which one of the following relationship between the wave length (?), and frequency and the speed (C)

  • Correct Answer
  • C = v


  • Elements of Remote Sensing problems


    Search Results


    • 1. A perfectly black body :

    • Options
    • A. is a diffuse emitter
    • B. absorbs all the radiations of every wave lengths
    • C. emits power of every wave length
    • D. All the above
    • Discuss
    • 2. The refractive index of the ocean water:

    • Options
    • A. increases with salinity
    • B. increases with temperature
    • C. decreases with salinity
    • D. decreases with temperature
    • Discuss
    • 3. Which one the following is a correct statement?

    • Options
    • A. The vertical section of the soil extending into the parent material, is called profile
    • B. The layers of the soil parallel to the earth surface, are called horizons.
    • C. The transitional layer between two adjoining horizons, is called boundary.
    • D. All of these
    • Discuss
    • 4. A and B are two towers of equal height diametrically opposite on either side of the nadir point, at 3 km and 5 km distances. Which one of the following statements is correct?

    • Options
    • A. Height displacement of A will be less than that of B
    • B. Height displacement of B will be less than that of A
    • C. Height displacement of A and B is equal
    • D. Height displacement of A and B will be towards each other
    • Discuss
    • 5. Which one of the following residual biases involves the GPS accuracy?

    • Options
    • A. Satellite dependent baises due to uncertainty in the orbital parameters of the satellite.
    • B. Receiver-depandent biases due to clock stability with line
    • C. Signal propagation baises due to the sphere and troposphere propogation.
    • D. All the above
    • Discuss
    • 6. Coherence of two electromagnetic waves takes place if their phase difference is :

    • Options
    • A. constant in time
    • B. constant in space
    • C. constant in time and space
    • D. None of these
    • Discuss
    • 7. The instruments which provide electromagnetic radiation of specified wave length or a band of wave lengths to illuminate the earth surface, are called :

    • Options
    • A. sensonrs
    • B. passive sensors
    • C. active sensors
    • D. None of these
    • Discuss
    • 8. A reduction of nitrogen nutrient in plants :

    • Options
    • A. affects leaf colour
    • B. reduces pigment concentration
    • C. increase the visible reflectivity
    • D. All of these
    • Discuss
    • 9. The remote sensing techniques applied for the earth's surface features, is generally confined to the following wave lengths :

    • Options
    • A. 0.4 to 1.3, 1.5 to 1.8, 2.2 to 2.6 ?m
    • B. 2.2 to 2.6, 3.0 to 3.6, 4.2 to 5.0 ?m
    • C. 4.2 to 5.0, 7.0 to 15.0 ?m and 1 cm to 30 cm
    • D. All of these
    • Discuss
    • 10. Pick up the correct statement from the following :

    • Options
    • A. The distance between two successive crests or troughs of a wave, is called, the wave length
    • B. The wave length is measured in metres and a fraction of a metre
    • C. The wave length is generally denoted by ?
    • D. The length of the crest from the mid point, is called amplitude
    • E. All of these
    • Discuss


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