M.Sc. (Semester II) (CBCS) Examination Oct/Nov-2017
Environmental Science
REMOTE SENSING AND GIS IN ENVIRONMENTAL SCIENCE
Day Date: Wednesday, 22-11-2017 Max. Marks: 70
Time: 10.30 AM to 01.00 PM
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
Which one of the following statement is correct?
Snow albedo falls at all wave length with increase of grain size
The effect of grain size on reflection is maximum in the near IR region
The effect of grain size on reflection is low in the visible region of the
spectrum
All of these
Electromagnetic radiation
Produces a time varying magnetic field and vice versa
Once generated, remains self propagating
Is capable to travel across space
All of these
The instruments which provide electromagnetic radiation of specified wave
length or a band of wave lengths to illuminate the earth surface are called.
Sensors Passive Sensors
Active Sensors None of these
Which one of the following helps to identify the objects on the earth
surface?
Atmospheric Window Signature
Radiometric error None of these
The part of radiation due to scattered/diffused entering the field of view of a
remote sensor.
Reduces the contrast of the image and also its sharpness
Increases the contrast of image but reduces the sharpness
Increases both the contrast and sharpness
Reduces the contrast but increases the sharpness
The arrangement of terrain features which provides attributes: the shape,
size and texture of objects is called.
Spatial variation Spectral variation
None of these Temporal variation
Page 2 of 2
SLR-MI-394
The reflectance from a surface is called secular reflection if is follows.
Snell's law Plankton's law
Lambert's cosine law All of these
For interpretation of satellite data used for monitoring dynamic changes
that occur on the earth surface the most suitable orbit for the satellite is.
Near polar orbit Sun-synchronous orbit
Circular orbit None of these
GIS deals with which kind of data
Numeric data Binary data
Spatial data Complex data
10) Which of the following is related to GIS
Euclidean space Pythagorean space
Ramanujan space None of these
11) Which of following belong to the eight spatial relationships?
Disjoint, meets, equals Contains, covers, Overlaps
Inside, covered by All of these
12) Which of the following relationship is correct
Point (0-simplex) Triangle (2-simplex)
Line segment (1-simplex) All of these
13) The 'boundary model' is sometimes also called
Topological data model Topological discrete model
Temporal data model Temporal discrete model
14) What is metadata?
It is 'data about data' It is 'Oceanic' data
It is 'metrological' data It is 'Contour' data
Q.2 Define resolution. What are its types? Throw light on its importance in remote
sensing.
14
Q.3 Describe various types of Sensors and platforms and discuss their salient
features.
14
Q.4 Explain the difference between raster and vector data structure. Mention their
merits and limitations also.
14
Q.5 Write a short notes on the following: 14
Advantages of Topology
Concept of Arc, Node and Vertices
Q.6 Write a brief with suitable illustration on the following: 14
Explain the Historical Development of Remote sensing Technique in India.
Elaborate the elements of Image interpretation.
Q.7 Write an account on the following 14
Spatial data query
Interval and Ratio data