M.Sc. (Semester II) (CBCS) Examination Mar/Apr-2018
Environmental Science
REMOTE SENSING AND GIS IN ENVIRONMENTAL SCIENCE
Time: 2½ Hours
Max. Marks: 70
Instructions: Answer any Five Question. All Questions carry equal marks. Question No. 1 is Compulsory. Attempt any two from Q.No.2, 3 and 4. Attempt any two from Q.No.5, 6 and 7.
Q.1
Select the answer among the following.
14
Leaf reflectance depends primarily on
Internal cell structure
Equivalent water content
The pigments
All of these
The remote sensing techniques applied for the earth's surface feature is generally confined to the following wave lengths
0.4 to 1.3, 1.5 to 1.8, 2.2 to 2.6
2.2 to 2.6, 3.0 to 3.6, 4.2 to 5.0
4.2 to 5.0, 7.0 to 15 and 1 cm to 30 cm
All of these
Remote sensing techniques make use of the properties of emitted, reflected or diffracted by the sensed objects.
Electric waves
Electromagnetic waves
Sound waves
Wind waves
The value of energy quantum for radiation of any frequency is proportional to
The square of the frequency
The square root of the frequency
The frequency
The reciprocal of the energy
Pick up the correct statement from the following
Spatial resolution of the imaging system becomes poorer with increase of platform height
Platforms may be either stationary or mobile
Area coverage of the imaging system increases with the increase of the platform altitude
All the above
A perfectly black body
Is a diffuse emitter
Absorbs all the radiations of every wave lengths
Emits power of every wave length
All of the above
Page 2 of 2
SLR-UI-365
Which one of the following parameters is considered to determine the reflectance of a vegetation canopy
Look angle
Azimuth angle
Number and arrangement of leaves
All of these
Mapmakers use GIS to
Store geographic information
Use geographic information
View geographic information
Store, use, view geographic information
Information in GIS is entered and stored as
Panels
Layers
Single panel
Dual panel
10) User can use GIS to make
Complex analysis only
Display maps only
Complex analysis and Display maps
None of these
11) Which of the following is true
Nominal and categorical data values are referred to as qualitative data
Internal and ratio data is known as qualitative data
Ordinal data refers to a ranking scheme
All of the above
12) Examples of continuous fields are
Air temperature
Barometric pressure
Soil salinity
All of the above
13) Key components of spatial data quality include
Positional accuracy
Temporal accuracy
Lineage and completeness
All of the above
14) In the world of GIS another term for the property of connectivity is
Proximity
Neighborhood
Topology
Location
Q.2
Discuss various modes of energy interaction of incoming radiations in remote sensing.
14
Q.3
What is remote sensing? Explain the elements of image interpretation.
14
Q.4
Examine the Utility of Geographic Information system.
14
Q.5
Write a short notes on the following:
14
Spatial and Non-spatial data
Levels of measurement
Q.6
Write a brief with suitable illustration on the following:
14
Describe the characteristics of region of electromagnetic spectrum.
Explain advantages and disadvantages of air based platform.
Q.7
Write an account on the following.
14
Raster data query
Importance of topology