Practice Test: Question Set - 01
1. Coherence of two electromagnetic waves takes place if their phase difference is:
- (A) Constant
in time
- (B) Constant in
space
- (C) Constant
in time and space
- (D) None of
these
2. Pick up the correct statement from the following:
- (A) Indian space
effort started in 1962 with the establishment of a rocket
- (B) Development
of space (DOS) was established by the Government of India in 1972
- (C) Indian
Space Research Organization (ISRO) is responsible for the space technology and
its application to various activities
- (D) All of these
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) Directly
proportional to the bandwidth
- (B) Inversely
proportional to the bandwidth
- (C) The
square of the bandwidth
- (D) None of
these
5. The reflectance from a surface is called specular reflection if it follows:
- (A) Snell’s law
- (B) Lambert's
cosine law
- (C) Planktan's
law
- (D) All of these
6. 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
7. 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
8. Which one of the following parameters is considered to determine the reflectance of a vegetation canopy?
- (A) Solar zenith
angle
- (B) Azimuth
angle
- (C) Look angle
- (D) All of these
9. A perfectly black body:
- (A) Is a diffuse
emitter
- (B) Absorbs
all the radiations of every wave lengths
- (C) Emits
power of every wave length
- (D) All
the above
10. 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
11. Which one the following is a correct statement?
- (A) The vertical
section of the soil extending into the parent material, is called profile
- (B) The
layers of the soil parallel to the earth surface are called horizons
- (C) The
transitional layer between two adjoining horizons is called boundary
- (D) All of these
12. In case of reflection and refraction of electromagnetic radiation,
- (A) Angle of
incidence = angle of refraction
- (B) Angle
of incidence = angle of reflection
- (C) Angle
of refraction = sum of the angles of incidence and refraction
- (D) All the
above
13. Pick up the correct statement from the following:
- (A) The
minimum frequency of light for which no electrons are emitted, is called
threshold frequency
- (B) Polarising
angle of glass is 57.5°
- (C) At
the polarising angle, the reflected and refracted rays are orthogonal
- (D) All the
above
14. Which one of the following factors does not affect the scale of the air photographs?
- (A) Focal length
- (B) Flying
height
- (C) Ground
elevation
- (D) None of
these
15. 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)
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