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Free download in PDF Elements of Remote Sensing Multiple Choice Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
(1)
Formation of snow occurs if the cloud temperature is
[A]
Below the freezing point
[B]
At the freezing point
[C]
Just above the freezing point
[D]
None of these
Answer: Below the freezing point
(2)
Coherence of two electromagnetic waves takes place if their phase difference is:
[A]
Constant in time and space
[B]
Constant in space
[C]
Constant in time
[D]
None of these
Answer: Constant in time and space
(3)
Pick up the correct statement from the following:
[A]
For the same feature, the photograph taken from the satellite vertically above the aircraft, the height displacement is lesser than the aerial photograph
[B]
The scale of the aerial photograph depends upon the scale of the topography
[C]
The feature at the principal point has no height displacement
[D]
All of the above
(4)
The coherence length over which there is a strong relationship between amplitudes is;
[A]
Inversely proportional to the bandwidth
[B]
The square of the bandwidth
[C]
Directly proportional to the bandwidth
[D]
None of these
Answer: Inversely proportional to the bandwidth
(5)
Repetitive observations of the same area at equal interval of time are useful to monitor the dynamic phenomena:
[A]
Cloud evolution
[B]
Snow cover
[C]
Vegetative cover
[D]
All the above
(6)
Which one the following is a correct statement?
[A]
The transitional layer between two adjoining horizons is called boundary
[B]
The layers of the soil parallel to the earth surface are called horizons
[C]
The vertical section of the soil extending into the parent material, is called profile
[D]
All of these
(7)
Who coined the term, ‘Remote sensing’.
[A]
Wilbur Wright, an Italian scientist
[B]
Gaspard Felix Tournachon, a French scientist
[C]
Evelyn L. Pruitt, a geographer
[D]
None of these
Answer: Evelyn L. Pruitt, a geographer
(8)
The basic requirement of any sensor system is:
[A]
Spectral resolution
[B]
Radiometric resolution
[C]
Spatial resolution
[D]
All of these
(9)
A passive sensor uses:
[A]
Its own source of energy
[B]
Flash light as a source of energy
[C]
Sun as the source of energy
[D]
None of these
Answer: Sun as the source of energy
(10)
Spatial variation in horizontal and vertical directions is caused due to:
[A]
Biological weathering of rocks
[B]
Chemical weathering of rocks
[C]
Physical weathering of rocks
[D]
All of these
(11)
The most widely used antenna in GPS is
[A]
Microstrip antenna
[B]
Horn antenna
[C]
Parabolic antenna
[D]
Slotted antenna
Answer: Microstrip antenna
(12)
Orbital radius of GPS satellites is approximately:
[A]
26,600 km
[B]
18,400 km
[C]
15,200 km
[D]
None of above
(13)
Which one of the following parameters is considered to determine the reflectance of a vegetation canopy?
[A]
Look angle
[B]
Azimuth angle
[C]
Solar zenith angle
[D]
All of these
(14)
A perfectly black
[A]
Emits power of every wave length
[B]
Absorbs all the radiations of every wave lengths
[C]
Is a diffuse emitter
[D]
All the above
(15)
In case of reflection and refraction of electromagnetic radiation,
[A]
Angle of incidence = angle of reflection
[B]
Angle of refraction = sum of the angles of incidence and refraction
[C]
Angle of incidence = angle of refraction
[D]
All the above
Answer: Angle of incidence = angle of reflection
(16)
Which one of the following factors does not affect the scale of the air photographs?
[A]
Ground elevation
[B]
Focal length
[C]
Flying height
[D]
None of these
(17)
Which one of the following statements regarding remote sensing is correct?
[A]
The emission of electromagnetic radiation from the target
[B]
The interaction of the electromagnetic radiation with the target
[C]
Both A. and B.
[D]
Neither A. nor B.
(18)
The optical property of a water body depends on:
[A]
Scattering by the suspended particulate matter
[B]
Absorption by the suspended particulate matter
[C]
Absorption by the dissolved material
[D]
All of these
(19)
Pick up the correct statement from the following:
[A]
Amplitude of a wave is the height of its crust from the mid-point
[B]
Frequency of a wave is measured in Hertz (Hz)
[C]
Frequency is the number of wave crests passing a fixed point in one second
[D]
All of these
(20)
The object of photo-interpretation is:
[A]
Judging the significance of objects
[B]
Recognition of objects
[C]
Identification
[D]
All of these
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