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Civil Engineering :: Elements of Remote Sensing

Elements of Remote Sensing - Section 1
Elements of Remote Sensing - Section 2
Elements of Remote Sensing - Section 3
Elements of Remote Sensing - section-4
  1. Which one of the following factors does not affect the scale of the air photographs?

    2. A.

     Focal length
    B.

     Flying height
    C.

     Ground elevation
    D.

     None of these

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  2. The optical property of a water body depends on:

    3. A.

     Absorption by the dissolved material
    B.

     Absorption by the suspended particulate matter
    C.

     Scattering by the suspended particulate matter
    D.

     All of these

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  3. The infrared portion of EMR lies between

    4. A.

     0.4 - 0.7 μm
    B.

     0.5 mm to 1 μm
    C.

     0.7 - 1.3 μm
    D.

     0.7 to 14 μm

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  4. The phase difference of the waves 1 and 2 at A in the given figure is:

    5. A.

     π/4
    B.

     π/2
    C.

     π/1
    D.

     3π/2

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  5. While propagating through homogeneous, isotropic media,

    6. A.

     Directions of both the fields are orthogonal
    B.

     Both the fields are at right angles to the direction of propagation
    C.

     Both (A) and (B)
    D.

     Neither (A) nor (B)

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  6. If θ is the angle of scan measured from the nadir, the ground distance swept by the sensor IFOV is proportional to:

    7. A.

     sin²θ
    B.

     cos²θ
    C.

     sec²θ
    D.

     tan²θ

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  7. The value of energy quantum for radiation of any frequency is proportional to:

    8. A.

     The frequency
    B.

     The reciprocal of the energy
    C.

     The square of the frequency
    D.

     The square root of the frequency

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  8. Sensor IFOV is proportional to:

    9. A.

     sin²
    B.

     cos²
    C.

     sec²
    D.

     tan²

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  9. The part radiation due to scattered/diffused radiation entering the field of view of a remote sensor other than that from the required target,

    10. A.

     Reduces the contrast of the image and also its sharpness
    B.

     Increases the contrast of the image but reduces the sharpness
    C.

     Increases both the contrast and sharpness
    D.

     Reduces the contrast but increases the sharpness

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  10. Pick up the correct definition from the following with response to GIS.

    11. A.

     Common boundary between two areas of a locality is known as adjacency
    B.

     The area features which are wholly contained within another area feature, is known so containment
    C.

     The geometric property which describes the linkage between line features is defined as connectivity
    D.

     All of these

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