Which one of the following statement is incorrect regarding the electromagnetic radiation?
A. These are produced by the motion of electric charge
B. The oscillation of charged particles sets up changing electric fields
C. The changing electric fields induce the changing magnetic fields in the surrounding medium
D. None of these
Select an option to see the answer and solution.
In the given figure the phase of
A. Crest A is 2 π
B. B crossing is π
C. Trough C is 2 3 π
D. All of these
Select an option to see the answer and solution.
Which one of the following helps to identify the objects on the earth surface?
A. Atmospheric window
B. Signature
C. Radiometric error
D. None of these
Select an option to see the answer and solution.
The interaction of the electromagnetic radiation produced with a specific wave length to illuminate a target on the terrain for studying its scattered radiance, is called:
A. Passive remote sensing
B. Active remote sensing
C. Neutral remote sensing
D. None of these
Select an option to see the answer and solution.
The remote sensing techniques applied for the earth's surface features, is generally confined to the following wave lengths:
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
Select an option to see the answer and solution.
Orbital radius of GPS satellites is approximately:
A. 15,200 km
B. 26,600 km
C. 18,400 km
D. 36,000 km
Select an option to see the answer and solution.
Spatial variation in horizontal and vertical directions is caused due to:
A. Physical weathering of rocks
B. Chemical weathering of rocks
C. Biological weathering of rocks
D. All of these
Select an option to see the answer and solution.
Which one of the following quantities forms the basis of radiometry?
A. Radiant energy (Q)
B. Radiant flux (φ)
C. Radiant intensity (I)
D. All of these
Select an option to see the answer and solution.
The arrangement of terrain features which provides attributes: the shape, size and texture of objects, is called:
A. Spectral variation
B. Spatial variation
C. Temporal variation
D. None of these
Select an option to see the answer and solution.
Which one of the following statements is correct?
A. During the day, earth reflects solar radiation
B. During the day, earth reflects both solar radiations the emission from its surface
C. During the night, earth emits radiation from its surface
D. All of these
Select an option to see the answer and solution.
‘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?
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
Select an option to see the answer and solution.
Which one of the following statements is correct?
A. Snow albedo falls at all wave length with the increase of grain size
B. The effect of grain size on reflection is maximum in the near-IR region
C. The effect of grain size on reflection is low in the visible region of the spectrum
D. All of these
Select an option to see the answer and solution.
Which one of the following statements is correct?
A. The function of an information system is to improve one’s ability to make decisions
B. The information system is the chain of operations
C. A map is a collection of stored, analyzed data, its stored information is suitability used in making decisions
D. All the above
Select an option to see the answer and solution.
Which one of the following statements is correct?
A. π radians equal to 180°
B. The cone subtended by an area on the sphere at the centre, is called the solid angle
C. The solid angle is equal to the ratio of the area on the sphere and the square of the radius of the sphere
D. All of these
Select an option to see the answer and solution.
Leaf reflectance depends primarily on:
A. The pigments
B. Internal cell structure
C. Equivalent water content
D. All of these
Select an option to see the answer and solution.
The code based GPS receivers are generally used for:
A. Vehicle tracking
B. Land navigation
C. Trans movement
D. All of these
Select an option to see the answer and solution.
Which one of the following statements regarding remote sensing is correct?
A. The interaction of the electromagnetic radiation with the target
B. The emission of electromagnetic radiation from the target
C. Both (A) and (B)
D. Neither (A) nor (B)
Select an option to see the answer and solution.
The object of photo-interpretation is:
A. Identification
B. Recognition of objects
C. Judging the significance of objects
D. All of these
Select an option to see the answer and solution.
The various stages occuring in GPS system are described below: 1. Generation of an output to the user 2. Detection of the GPS signals 3. Processing the data in the built-in-computer 4. Decoding the GPS signal. The correct sequence of the stages is:
A. 1, 2, 3, 4
B. 2, 3, 4, 1
C. 2, 4, 3, 1
D. 3, 1, 2, 4
Select an option to see the answer and solution.
Pick up the correct statement from the following:
A. A graphical representation of spectral reflectance verses the various growth stages of a crop, depicts a phonologic pattern
B. The changes in the polarization of the radiation reflected or emitted by an object, is known as polarization variation
C. The degree of polarization is a characteristic of the object which helps in the identification of the object
D. All of these
Select an option to see the answer and solution.