Elements of Remote Sensing MCQs
Elements of Remote Sensing MCQs
These Elements of Remote Sensing multiple-choice questions and their answers will help you strengthen your grip on the subject of Elements of Remote Sensing. You can prepare for an upcoming exam or job interview with these Elements of Remote Sensing MCQs.
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1: Crop Acreage and Production Estimation (CAPE) was funded and taken up in 1983 by:
A. European Union
B. Russia
C. USA
D. India
2: The basic requirement of any sensor system, is:
A. Radiometric resolution
B. All of these
C. Spectral resolution
D. Spatial resolution
E. Temporal resolution
3: Pick up the correct definition from the following with response to GIS.
A. The geometric property which describes the linkage between line features is defined as connectivity.
B. The area features which are wholly contained within another area feature, is known so containment.
C. Common boundry between two areas of a locality is known as adjacency.
D. All of these.
4: Due to pertubation of the orbit, satellite orbit parameters are frequently updated on measurements carried out by its
A. Three ground stations
B. Four ground stations
C. Six ground stations
D. Five ground stations
5: Which one of the following statements is correct?
A. The effect of grain size on reflection is maximum in the near-IR region
B. The effect of grain size on reflection is low in the visible region of the spectrum
C. Snow albedo falls at all wave length with the increase of grain size
D. All of these
6: Which one of the following frequency regions is a part of sun's radiation?
A. Infrared frequency region
B. Visible frequency region
C. All of these
D. Radio frequency region
E. Ultraviolet frequency region
7: Pick up the correct statement from the following:
A. All of these
B. Indian space effort started in 1962 with the establishment of a rocket.
C. Indian Space Research Organisation (ISRO) is responsible for the space technology and its application to various activities.
D. Development of space (DOS) was established by the Government of India in 1972
8: The value of energy quantum for radiation of any frequency is proportional to:
A. The frequency
B. The square root of the frequency
C. The reciprocal of the energy
D. The square of the frequency
9: Pick up the important characteristic of a target which facilitates its identification from the following:
A. Spatial variation
B. Spectral variation
C. Temporal variation
D. Polarisation variation
E. All of these
10: Select the correct statement from the following:
A. All of these
B. When the electric vector is at right angles to the plane of incidence, horizontal polarization wave is formed.
C. When the electric vector is in the plane of incidence, vertical polarisation is formed.
D. When the electric field oscillates in the direction of the electric vector, a plane polarised wave is formed.
E. The plane containing the incident ray and normal to the reflecting surface at the point of incidence is called the plane of incidence.
11: 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 and B will be towards each other
B. Height displacement of A and B is equal
C. Height displacement of B will be less than that of A
D. Height displacement of A will be less than that of B
12: Which one of the following residual biases involves the GPS accuracy?
A. All these
B. Signal propagation baises due to the sphere and troposphere propagation.
C. Satellite dependent baises due to uncertainty in the orbital parameters of the satellite.
D. Receiver-depandent biases due to clock stability with line
13: Remote sensing techniques makes use of the properties of-----emitted, reflected or diffracted by the sensed objects:
A. Electric waves
B. Soundwaves
C. Electromagnetic waves
D. Wind waves
14: Coherence of two electromagnetic waves takes place if their phase difference is:
A. None of these
B. Constant in time and space
C. Constant in space
D. Constant in time
15: Which the following statements is correct?
A. During the day earth reflects both solar radiation the emission from its surface
B. During the night, earth emits radiation from its surface
C. All of these
D. During the day, earth reflects solar radiation
16: The part radiation due to scattered/diffused radiation entering the field of view of a remote sensor other than that from the required target,
A. Reduces the contrast of the image and also its sharpness
B. Increases the contrast of the image but reduces the sharpness
C. Increases both the contrast and sharpness
D. Reduces the contrast but increases the sharpness
17: The instruments which provide electromagnetic radiation of specified wave length or a band of wave lengths to illuminate the earth surface, are called:
A. Active sensors
B. Passive sensors
C. Sensonrs
D. None of these
18: The arrangement of terrain features which provides attributes: the shape, size and texture of objects, is called:
A. Spectral variation
B. Spatial variation
C. None of these.
D. Temporal variation
19: A perfectly black body:
A. Absorbs all the radiations of every wave lengths
B. Emits power of every wave length
C. All these
D. Is a diffuse emitter
20: The spectral region of the electromagnetic radiation which passes through the atmosphere without much attenuation is known as:
A. Ozone window
B. Black hole
C. Ozone hole
D. Atmospheric window
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