Q.1

The refractive index of the ocean water:

  • increases with salinity
  • increases with temperature
  • decreases with salinity
  • decreases with temperature
Q.2

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

  • visible (0.4 - 0.7 μm) region
  • near-IR (0.7 - 1.3 μm) region
  • short wave-IR (1.3 - 2.7 μm) region
  • None of these
Q.3

Pick up the correct statement from the following:

  • Indian space effort started in 1962 with the establishment of a rocket.
  • Development of space (DOS) was established by the Government of India in 1972
  • Indian Space Research Organisation (ISRO) is responsible for the space technology and its application to various activities.
  • All of these
Q.4

Which one of the following statements is correct?

  • During the day, earth reflects solar radiation
  • During the day earth reflects both solar radiation the emission from its surface
  • During the night, earth emits radiation from its surface
  • All of these
Q.5

Crop Acreage and Production Estimation (CAPE) was funded and taken up inby:

  • USA
  • European Union
  • Russia
  • India
Q.6

Critical angle of electromagnetic radiation takes place if

  • angle of incidence is equal to angle of refraction
  • angle of incidence is greater than the angle of refraction
  • angle of incidence is equal to 90°
  • angle of refraction is equal to 90°
Q.7

Pick up the correct statement from the following:

  • The surface defined by the locus of points having same phase, is called a wave front.
  • The wave whose surface of constant phase are parallel planes, is known as a plane wave.
  • The relative phase difference between the waves is important and not the absolute phase of a point on the wave
  • All of these
Q.8

Due to pertubation of the orbit, satellite orbit parameters are frequently updated on measurements carried out by its

  • six ground stations
  • five ground stations
  • four ground stations
  • three ground stations
Q.9

In case of reflection and refraction of electromagnetic radiation,

  • angle of incidence = angle of refraction
  • angle of incidence = angle of reflection
  • angle of refraction = sum of the angles of incidence and refraction
  • All the above
Q.10

A perfectly black body :

  • is a diffuse emitter
  • absorbs all the radiations of every wave lengths
  • emits power of every wave length
  • All the above
Q.11

The infrared portion of EMR lies between

  • 0.4 - 0.7 μm
  • 0.5 mm to lm
  • 0.7 - 1.3 μm
  • 0.7 to 14 μm
Q.12

Pick up the correct statement from the following:

  • Permeability is a measure of conducting the magnetic lines of force in the material.
  • Permeability is a measure of the extent to which magnetic lines of force can penetrate a medium.
  • Permeability is expressed as the ratio of the magnetic flux density (B) to the field strength of the magnetizing field.
  • The force between the magnetic poles is inversely proportional to the permeability of the medium.
  • All of these
Q.13

The arrangement of terrain features which provides attributes: the shape, size and texture of objects, is called :

  • spectral variation
  • spatial variation
  • temporal variation
  • None of these .
Q.14

Which one the following is a correct statement?

  • The vertical section of the soil extending into the parent material, is called profile
  • The layers of the soil parallel to the earth surface, are called horizons.
  • The transitional layer between two adjoining horizons, is called boundary.
  • All of these
Q.15

Rayleigh's criteria for a rough surface is: (where letters carry their usual meanings).

  • h > λ/Δ cos θ
  • h = λ/8 cos θ
  • h > λ/8 cos θ
  • h < λ/8 cos θ
Q.16

The remote sensing techniques applied for the earth's surface features, is generally confined to the following wave lengths :

  • 0.4 to 1.3, 1.5 to 1.8, 2.2 to 2.6 μm
  • 2.2 to 2.6, 3.0 to 3.6, 4.2 to 5.0 μm
  • 4.2 to 5.0, 7.0 to 15.0 μm and 1 cm to 30 cm
  • All of these
Q.17

Electromagnetic spectrum contains :

  • gamma rays (wave length < 10-10 m)
  • ultraviolet rays (wave length < 10-6 m)
  • infrared rays (wave length < 10-4 m)
  • radio rays (wave length > 1 m)
  • All of these
Q.18

The object of photo-intepretation is:

  • All of these
  • identification
  • recognition of objects
  • judging the significance of objects
Q.19

Pick up the correct statement from the following :

  • Frequency is the number of wave crests passing a fixed point in one second
  • Frequency of a wave is measured in Hertz (Hz)
  • Amplitude of a wave is the height of its crust from the mid-point.
  • The square of the amplitude is proportional to the energy transported by the wave.
  • All of these
Q.20

The changes in the reflectivity/emis-sivity with time, is called :

  • spectral variation
  • spatial variation
  • temporal variation
  • None of these
Q.21

The GPS space segment consists of Navigation Satellite Timing and Ranging whose number is :

  • 8
  • 12
  • 16
  • 24
Q.22

Coherence of two electromagnetic waves takes place if their phase difference is :

  • constant in time
  • constant in space
  • constant in time and space
  • None of these
Q.23

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

  • circular orbit
  • sun-synchronous orbit
  • near polar orbit
  • None of these
Q.24

Pick up the correct statement from the following :

  • When the electric field oscillates in the direction of the electric vector, a plane polarised wave is formed.
  • When the electric vector is in the plane of incidence, vertical polarisation is formed.
  • When the electric vector is at right angles to the plane of incidence, horizontal polarization wave is formed.
  • The plane containing the incident ray and normal to the reflecting surface at the point of incidence is called the plane of incidence.
  • All of these
Q.25

Who coined the term, 'Remote sensing'.

  • Evelyn L. Pruitt, a geographer
  • Gaspard Felix Tournachon, a French scientist
  • Wilbur Wright, an Italian sciencist
  • None of these
Q.26

Pick up the correct statement from the following:

  • In remote sensing technique, the observation place, is called a platform
  • Platforms may be either stationary or mobile
  • Spatial resolution of the imaging system becomes poorer with increase of platform height.
  • Area coverage of the imaging system increases with the increase of the platform altitude.
  • All of these
Q.27

Electromagnetic radiation :

  • produces a time varying magnetic field and vice versa
  • once generated, remains self-propagat-ing.
  • is capable to travel across space
  • consists of magnetic and electric fields
  • All of these
Q.28

Pick up the correct statement from the following :

  • The distance between two successive crests or troughs of a wave, is called, the wave length
  • The wave length is measured in metres and a fraction of a metre
  • The wave length is generally denoted by λ
  • The length of the crest from the mid point, is called amplitude
  • All of these
Q.29

The ratio of the total solar radiant energy returned by a planetary body to the total radiant energy incident on the body, the called:

  • reflectance
  • reflectance factor
  • albedo
  • none of these
Q.30

Pick up the correct statement from the following :

  • The first man-made satellite, Sputnikl' was launched on 4th October, 1957
  • The United State's Explorer 6 transmitted the first picture of the earth in August 1959
  • Television Infrared Observation Satellite (TIROS) designed for meteorological observations, started systematic earth observations from space from 1, April, 1960
  • U.S.A.'s highly secret mission CORONA started the collection of intelligence photograpy in 1960
  • All of these.
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