Home / Civil Engineering / Elements of Remote Sensing :: Section 1

Civil Engineering :: Elements of Remote Sensing

  1. The basic requirement of any sensor system, is :

  2. A.

    radiometric resolution

    B.

    spatial resolution

    C.
    spectral resolution
    D.

    temporal resolution

    E.

    All of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  3. The basic requirement of any sensor system, is :

  4. A.

    radiometric resolution

    B.

    radiometric resolution

    C.
    spectral resolution
    D.

    temporal resolution

    E.

    All of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  5. Which one of the following helps to identify the objects on the earth surface ?

  6. A.

    atmospheric window

    B.

    signature

    C.
    radiometric error
    D.

    None of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  7. The spectral region of the electromagnetic radiation which passes through the atmosphere without much attenuation is known as:

  8. A.

    ozone hole

    B.

    atmospheric window

    C.

    ozone window

    D.
    black hole

    View Answer

    Workspace

    Discuss Discuss in Forum


  9. Which one of the following statements is correct?

  10. A.

    During the day, earth reflects solar radiation

    B.

    During the day earth reflects both solar radiation the emission from its surface

    C.

    During the night, earth emits radiation from its surface

    D.

    All of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  11. The remote sensing techniques applied for the earth's surface features, is generally confined to the following wave lengths :

  12. A.

    0.4 to 1.3, 1.5 to 1.8, 2.2 to 2.6 μm

    B.

    2.2 to 2.6, 3.0 to 3.6, 4.2 to 5.0 μm

    C.

    4.2 to 5.0, 7.0 to 15.0 μm and 1 cm to 30 cm

    D.

    All of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  13.  

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

  14. A.
    the frequency
    B.

    the reciprocal of the energy

    C.

    the square of the frequency

    D.

    the square root of the frequency

    View Answer

    Workspace

    Discuss Discuss in Forum


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

  16. A.

    π/4

    B.

    π/2

    C.

    π

    D.

    3π/2

    View Answer

    Workspace

    Discuss Discuss in Forum


  17. A perfectly black body :

  18. 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

    View Answer

    Workspace

    Discuss Discuss in Forum


  19. Pick up the correct statement from the following :

  20. 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

    View Answer

    Workspace

    Discuss Discuss in Forum