The value of energy quantum for radiation of any frequency is proportional to:

The square root of the frequency

Which one of the following residual biases involves the GPS accuracy?

Satellite dependent biases due to uncertainty in the orbital parameters of the satellite

Receiver-dependent biases due to clock stability with line

Signal propagation biases due to the sphere and troposphere propagation

Pick up the correct statement from the following

The ratio of the up flux and down flux just above the snow surface, is called albedo

Spectral albedo of snow is calculated for the semi-infinite snow thickness

Water equivalent height of snow is the height of water column obtained by melting snow

Earth observations from a satellite platform provide:

Constant solar zenith angles and similar illumination conditions

Repetitive observations of the same area with intervals of a few minutes to a few weeks

Electromagnetic spectrum contains:

Gamma rays (wave length < 10⁻¹⁰ m)

Ultraviolet rays (wave length < 10⁻⁶ m)

Infrared rays (wave length < 10⁻⁴ m)

A passive sensor uses:

Flash light as a source of energy

Due to scan geometry of a satellite sensor:

The off-nadir resolution is degraded

The ground distance swept by the senor, IFOV is proportional to sec2θ, where θ is the angle of scan measured from the nadir

The details towards the edge of the scan get compressed

The reflection of solar energy is characterized by the water content in the leaf, in the reflective optical infrared:

Short wave-IR (1.3 - 2.7 μm) region

‘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?

Height displacement of B will be less than that of A

Height displacement of A will be less than that of B

Height displacement of B will be less than that of A

Height displacement of A and B is equal

Height displacement of A and B will be towards each other

For obtaining accurate distance of the satellite

the GPS receiver slides its codes backwards until it synchronises with the satellite signals

the signal arrival time is corrected for tropospheric and ionospheric delays

the carrier phase measurement technique is adopted

GPS has been widely recognized as accurate, fast and cost-effective method for the following:

Collection of the geographic coordinate data used in GIS

For determination of precise orbit and altitude of low earth orbiting satellites

A remote sensor photographic camera :

responses spectrum up to about 0.9 ?

does not cover short wave IR region

does not cover thermal IR region

The leaf area index (LAI) is :

two sided leaf area per -unit area of the ground

one sided leaf area per unit area of the ground

two sided leaf area per -unit area of the ground

the average of the two sided area per unit area of the ground

According to the Snell's law if an electromagnetic wave is incident in a medium (refractive index n 1 ) on an other medium (refractive index m 2 );

the angle of incidence is equal to the angle of refraction

the angle of refraction (? r ) is given by

The object of photo-intepretation is:

judging the significance of objects

202 + Mcqs in Elements of Remote Sensing in Surveying Page 4 McqOptions

151.	Which one of the following relationship between the wave length (λ), and frequency and the speed (C) of the electromagnetic wave is correct?
A.	C = v + λ
B.	C = λ/v
C.	C = vλ
D.	C = 1/λv
Answer» D. C = 1/λv

Discussion

152.	The changes in the reflectivity/emissivity with time, is called:
A.	Spectral variation
B.	Spatial variation
C.	Temporal variation
D.	None of these
Answer» D. None of these

Discussion

153.	The refractive index of the ocean water:
A.	Increases with salinity
B.	Increases with temperature
C.	Decreases with salinity
D.	Decreases with temperature
Answer» B. Increases with temperature

Discussion

154.	Which one of the following frequency regions is a part of sun's radiation?
A.	Ultraviolet frequency region
B.	Infrared frequency region
C.	Radio frequency region
D.	All of these
Answer» E.

Discussion

155.	Repetitive observations of the same area at equal interval of time are useful to monitor the dynamic phenomena:
A.	Cloud evolution
B.	Vegetative cover
C.	Snow cover
D.	All of these
Answer» E.

Discussion

156.	Sensor IFOV is proportional to:
A.	sin²
B.	cos²
C.	sec²
D.	tan²
Answer» D. tan²

Discussion

157.	The value of energy quantum for radiation of any frequency is proportional to:
A.	The frequency
B.	The reciprocal of the energy
C.	The square of the frequency
D.	The square root of the frequency
Answer» B. The reciprocal of the energy

Discussion

158.	If θ is the angle of scan measured from the nadir, the ground distance swept by the sensor IFOV is proportional to:
A.	sin²θ
B.	cos²θ
C.	sec²θ
D.	tan²θ
Answer» D. tan²θ

Discussion

159.	For interpolation of satellite data used for monitoring dynamic changes that occurs on the earth surface, the most suitable orbit for the satellite is:
A.	Circular orbit
B.	Sun-synchronous orbit
C.	Near polar orbit
D.	None of these
Answer» C. Near polar orbit

Discussion

160.	Which one of the following residual biases involves the GPS accuracy?
A.	Satellite dependent biases due to uncertainty in the orbital parameters of the satellite
B.	Receiver-dependent biases due to clock stability with line
C.	Signal propagation biases due to the sphere and troposphere propagation
D.	All the above
Answer» E.

Discussion

161.	Consider the following statements regarding the satellite imaging:1. The satellite orbit is fixed in the inertial space2. During successive across-track imaging, the earth rotates beneath the sensor3. The satellite images a skewed areaWhich one of the following statements is/are correct?
A.	1, 2, 3
B.	1, 3
C.	2, 3
D.	1, 2
Answer» B. 1, 3

Discussion

162.	Pick up the correct statement from the following
A.	The ratio of the up flux and down flux just above the snow surface, is called albedo
B.	Spectral albedo of snow is calculated for the semi-infinite snow thickness
C.	Water equivalent height of snow is the height of water column obtained by melting snow
D.	All of these
Answer» E.

Discussion

163.	Earth observations from a satellite platform provide:
A.	Synoptic view of a large area
B.	Constant solar zenith angles and similar illumination conditions
C.	Repetitive observations of the same area with intervals of a few minutes to a few weeks
D.	All of these
Answer» E.

Discussion

164.	Electromagnetic spectrum contains:
A.	Gamma rays (wave length < 10⁻¹⁰ m)
B.	Ultraviolet rays (wave length < 10⁻⁶ m)
C.	Infrared rays (wave length < 10⁻⁴ m)
D.	All of these
Answer» E.

Discussion

165.	DGPS is based on the concept that bias errors in the position of locations in a given local area, are same if their distances are within
A.	25 km
B.	50 km
C.	75 km
D.	100 km
Answer» E.

Discussion

166.	A passive sensor uses:
A.	Sun as the source of energy
B.	Flash light as a source of energy
C.	Its own source of energy
D.	None of these
Answer» B. Flash light as a source of energy

Discussion

167.	The basic requirement of any sensor system is:
A.	Radiometric resolution
B.	Spatial resolution
C.	Spectral resolution
D.	All of these
Answer» E.

Discussion

168.	Due to scan geometry of a satellite sensor:
A.	The off-nadir resolution is degraded
B.	The ground distance swept by the senor, IFOV is proportional to sec2θ, where θ is the angle of scan measured from the nadir
C.	The details towards the edge of the scan get compressed
D.	All of these
Answer» E.

Discussion

169.	The reflection of solar energy is characterized by the water content in the leaf, in the reflective optical infrared:
A.	Visible (0.4 - 0.7 μm) region
B.	Near-IR (0.7 - 1.3 μm) region
C.	Short wave-IR (1.3 - 2.7 μm) region
D.	None of these
Answer» D. None of these

Discussion

170.	The maximum sun's radiation occurs around:
A.	0.4 μm wave length
B.	0.55 μ wave length
C.	0.7 μ wave length
D.	None of these
Answer» C. 0.7 μ wave length

Discussion

171.	'A time varying electric field produces a magnetic field.' This phenomenon is called:
A.	Hertz's law
B.	Ampere Maxwell's law
C.	Faraday's law
D.	Kirchoff’s law
Answer» C. Faraday's law

Discussion

172.	Pick up the important characteristic of a target which facilitates its identification from the following:
A.	Spectral variation
B.	Spatial variation
C.	Temporal variation
D.	All of these
Answer» E.

Discussion

173.	The various stages occuring in GPS system are described below:1. Generation of an output to the user2. Detection of the GPS signals3. Processing the data in the built-in-computer4. 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
Answer» D. 3, 1, 2, 4

Discussion

174.	Leaf reflectance depends primarily on:
A.	The pigments
B.	Internal cell structure
C.	Equivalent water content
D.	All of these
Answer» E.

Discussion

175.	‘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
Answer» B. Height displacement of B will be less than that of A

Discussion

176.	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
Answer» E.

Discussion

177.	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
Answer» E.

Discussion

178.	The phase difference of the waves 1 and 2 at A in the given figure is:
A.	π/4
B.	π/2
C.	π/1
D.	3π/2
Answer» C. π/1

Discussion

179.	The infrared portion of EMR lies between
A.	0.4 - 0.7 μm
B.	0.5 mm to 1 μm
C.	0.7 - 1.3 μm
D.	0.7 to 14 μm
Answer» E.

Discussion

180.	For obtaining accurate distance of the satellite
A.	the GPS receiver slides its codes backwards until it synchronises with the satellite signals
B.	the signal arrival time is corrected for tropospheric and ionospheric delays
C.	the carrier phase measurement technique is adopted
D.	All of these
Answer» D. All of these

Discussion

181.	The various stages of formation of snow are listed below : 1. Formation of ice crystals 2. Formation of snow pallets 3. Formation of snow flakes 4. Formationof snow crystals 5. Formation of rimed crystals Which one of the following sequences is correct ?
A.	3 2 5 1 4
B.	5 3 1 2 4
C.	1 4 3 5 2
D.	1 3 4 2 5
Answer» D. 1 3 4 2 5

Discussion

182.	GPS has been widely recognized as accurate, fast and cost-effective method for the following:
A.	Collection of the geographic coordinate data used in GIS
B.	for movement of navigation
C.	For determination of precise orbit and altitude of low earth orbiting satellites
D.	All of these
Answer» E.

Discussion

183.	A time varying magnetic field produces an electric field'. This phenomenon is known as
A.	Newton's law
B.	Kirchofflaw
C.	Ampere Maxwell law
D.	Faraday's law
Answer» E.

Discussion

184.	The emission of electrons from a metal plate exposed to light depends on the :
A.	intensity of the light
B.	frequency of light
C.	both (a) and (b)
D.	neither (a) nor (b)
Answer» D. neither (a) nor (b)

Discussion

185.	The range measurements in GPS are made with :
A.	3 L - band frequencies
B.	2 L - band frequencies
C.	2 C - band frequencies
D.	3 C - band frequencies
Answer» C. 2 C - band frequencies

Discussion

186.	The information system is the chain of the following operations, 1. Collection of data 2. Planning the observations 3. Analysis of data 4. Decision making process Which one of the chains is correct ?
A.	4, 1, 2, 3
B.	2, 1, 3, 4
C.	3, 2, 1, 4
D.	1, 3, 4, 2
Answer» C. 3, 2, 1, 4

Discussion

187.	The main functional blocks of a mul-tispectral scanner (MSS) are given below : 1. Video processor 2. Dispersive system 3. Detector 4. Signal conditioner 5. Collecting optics Which one of the following sequences is correct?
A.	1, 4, 5, 3, 2
B.	5, 3, 2, 4, 1
C.	5, 2, 3, 1, 4
D.	1, 3, 2, 4, 5
Answer» D. 1, 3, 2, 4, 5

Discussion

188.	A remote sensor photographic camera :
A.	responses spectrum up to about 0.9 ?
B.	does not cover short wave IR region
C.	does not cover thermal IR region
D.	All the above
Answer» E.

Discussion

189.	In sun-light water poor in phyto plank tons appears :
A.	deep blue
B.	red
C.	green
D.	yellow
Answer» B. red

Discussion

190.	The leaf area index (LAI) is :
A.	one sided leaf area per unit area of the ground
B.	two sided leaf area per -unit area of the ground
C.	the average of the two sided area per unit area of the ground
D.	None of these
Answer» B. two sided leaf area per -unit area of the ground

Discussion

191.	Which one of the following is incorrect statement? While passing through the atmosphere, the solar radiation,
A.	remains unaffected
B.	gets scattered
C.	gets absorbed partially
D.	None of these
Answer» B. gets scattered

Discussion

192.	Assuming n as the frequency of radiation, n 0 as the threshold frequency and k as a constant, the energy of the photo-electrons ( E ) is related as
A.	E = k (n - n 0 )
B.	E = k (n + n 0 )
C.	E = k (n x n 0 )
D.	-
Answer» B. E = k (n + n 0 )

Discussion

193.	According to the Snell's law if an electromagnetic wave is incident in a medium (refractive index n 1 ) on an other medium (refractive index m 2 );
A.	the angle of incidence is equal to the angle of refraction
B.	the angle of refraction (? r ) is given by
C.	Both (a) and (b)
D.	neither (a) nor (b)
Answer» C. Both (a) and (b)

Discussion

194.	The reflectance from a surface is called specular reflection if it follows: .
A.	Snells's law
B.	Lambert's cosine law
C.	Planktan's law
D.	All of these
Answer» B. Lambert's cosine law

Discussion

195.	DGPS is based on the concept that bais errors in the position of locations in a given local area, are same if their distances are within
A.	25 km
B.	50 km
C.	75 km
D.	100 km
Answer» E.

Discussion

196.	The object of photo-intepretation is:
A.	identification
B.	recognition of objects
C.	judging the significance of objects
D.	All of these
Answer» E.

Discussion

197.	A time varrying electric field produces a magnetic field.' This phenemenon is called:
A.	Hertz's law
B.	Ampere Maxwell's law
C.	Faraday's law
D.	Kirchoff s law
Answer» C. Faraday's law

Discussion

198.	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
Answer» E.

Discussion

199.	Crop Acreage and Production Estimation (CAPE) was funded and taken up in 1983 by:
A.	USA
B.	European Union
C.	Russia
D.	India
Answer» E.

Discussion

200.	Consider the following statements regarding the satellite imaging : 1. The satellite orbit is fixed in the inertial space 2. During successive across-track imaging, the earth rotates beneath the sensor 3. The satellite images a skewed area Which one of the following statements is/are correct ?
A.	1, 2, 3
B.	1, 3
C.	2, 3
D.	1, 2
Answer» B. 1, 3

Discussion

Explore topic-wise MCQs in Surveying.

Which one of the following relationship between the wave length (λ), and frequency and the speed (C) of the electromagnetic wave is correct?

The changes in the reflectivity/emissivity with time, is called:

The refractive index of the ocean water:

Which one of the following frequency regions is a part of sun's radiation?

Repetitive observations of the same area at equal interval of time are useful to monitor the dynamic phenomena:

Sensor IFOV is proportional to:

The value of energy quantum for radiation of any frequency is proportional to:

If θ is the angle of scan measured from the nadir, the ground distance swept by the sensor IFOV is proportional to:

For interpolation of satellite data used for monitoring dynamic changes that occurs on the earth surface, the most suitable orbit for the satellite is:

Which one of the following residual biases involves the GPS accuracy?

Consider the following statements regarding the satellite imaging:1. The satellite orbit is fixed in the inertial space2. During successive across-track imaging, the earth rotates beneath the sensor3. The satellite images a skewed areaWhich one of the following statements is/are correct?

Pick up the correct statement from the following

Earth observations from a satellite platform provide:

Electromagnetic spectrum contains:

DGPS is based on the concept that bias errors in the position of locations in a given local area, are same if their distances are within

A passive sensor uses:

The basic requirement of any sensor system is:

Due to scan geometry of a satellite sensor:

The reflection of solar energy is characterized by the water content in the leaf, in the reflective optical infrared:

The maximum sun's radiation occurs around:

'A time varying electric field produces a magnetic field.' This phenomenon is called:

Pick up the important characteristic of a target which facilitates its identification from the following:

The various stages occuring in GPS system are described below:1. Generation of an output to the user2. Detection of the GPS signals3. Processing the data in the built-in-computer4. Decoding the GPS signal.The correct sequence of the stages is:

Leaf reflectance depends primarily on:

‘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?

Which one of the following quantities forms the basis of radiometry?

Spatial variation in horizontal and vertical directions is caused due to:

The phase difference of the waves 1 and 2 at A in the given figure is:

The infrared portion of EMR lies between

For obtaining accurate distance of the satellite

The various stages of formation of snow are listed below : 1. Formation of ice crystals 2. Formation of snow pallets 3. Formation of snow flakes 4. Formationof snow crystals 5. Formation of rimed crystals Which one of the following sequences is correct ?

GPS has been widely recognized as accurate, fast and cost-effective method for the following:

A time varying magnetic field produces an electric field'. This phenomenon is known as

The emission of electrons from a metal plate exposed to light depends on the :

The range measurements in GPS are made with :

The information system is the chain of the following operations, 1. Collection of data 2. Planning the observations 3. Analysis of data 4. Decision making process Which one of the chains is correct ?

The main functional blocks of a mul-tispectral scanner (MSS) are given below : 1. Video processor 2. Dispersive system 3. Detector 4. Signal conditioner 5. Collecting optics Which one of the following sequences is correct?

A remote sensor photographic camera :

In sun-light water poor in phyto plank tons appears :

The leaf area index (LAI) is :

Which one of the following is incorrect statement? While passing through the atmosphere, the solar radiation,

Assuming n as the frequency of radiation, n 0 as the threshold frequency and k as a constant, the energy of the photo-electrons ( E ) is related as

According to the Snell's law if an electromagnetic wave is incident in a medium (refractive index n 1 ) on an other medium (refractive index m 2 );

The reflectance from a surface is called specular reflection if it follows: .

DGPS is based on the concept that bais errors in the position of locations in a given local area, are same if their distances are within

The object of photo-intepretation is:

A time varrying electric field produces a magnetic field.' This phenemenon is called:

Spatial variation in horizontal and vertical directions, is caused due to :

Crop Acreage and Production Estimation (CAPE) was funded and taken up in 1983 by:

Consider the following statements regarding the satellite imaging : 1. The satellite orbit is fixed in the inertial space 2. During successive across-track imaging, the earth rotates beneath the sensor 3. The satellite images a skewed area Which one of the following statements is/are correct ?