1. Pick up the correct statement from the following:
Correct : D. all of these
2. Pick up the correct statement from the following:
Correct : D. all of these
3. Formation of snow occurs if the cloud temperature is
Correct : C. below the freezing point
4. In the given figure the phase of
Correct : D. all of these
5. Coherence of two electromagnetic waves takes place if their phase difference is:
Correct : C. constant in time and space
6. The coherence length over which there is a strong relationship between amplitudes is;
Correct : B. inversely proportional to the bandwidth
7. Pick up the correct statement from the following:
Correct : D. all of these
8. Repetitive observations of the same area at equal interval of time are useful to monitor the
dynamic phenomena:
Correct : D. all of these
9. Which one of the following parameters is considered to determine the reflectance of a vegetation
canopy?
Correct : D. all of these
10. A perfectly black body:
Correct : D. all the above
11. sensor IFOV is
proportional to:
Correct : C. sec2
12. Which one the following is a correct statement?
Correct : D. all of these
13. In case of reflection and refraction of electromagnetic radiation,
Correct : B. angle of incidence = angle of reflection
14. Which one of the following factors does not affect the scale of the air photographs?
Correct : D. none of these
15. Which one of the following statements regarding remote sensing is correct?
Correct : C. both (a) and (b)
16. The optical property of a water body depends on:
Correct : D. all of these
17. Pick up the correct statement from the following:
Correct : D. all of these
18. The object of photo-interpretation is:
Correct : D. all of these
19. Pick up the correct statement from the following:
Correct : D. an increase of phytoplankton decreases the back scattering in the green region
20. Which one of the following statements is correct regarding the GPS satellites?
Correct : D. all of these
21. Which one of the following statements is correct?
Correct : D. all of these
22. A reduction of nitrogen nutrient in plants:
Correct : D. all of these
23. Remote sensing techniques make use of the properties of ___________ emitted, reflected or
diffracted by the sensed objects:
Correct : C. electromagnetic waves
24. Which one of the following statement is incorrect regarding the electromagnetic radiation?
Correct : D. none of these
25. The altitudinal distance of a geostationary satellite from the earth is about:
Correct : C. 36,000 km
26. The ratio of the total solar radiant energy returned by a planetary body to the total radiant energy
incident on the body, the called:
Correct : C. albedo
27. Which one of the following statement is correct?
Correct : D. all of these
28. Which one of the following parameters is accurate for DGPS?
Correct : A. positional accuracies ~ 1 - 2 m if rover is less than 1-2 km from the reference station
29. Crop Acreage and Production Estimation (CAPE) was funded and taken up in 1983 by:
Correct : D. india
30. 'A time varying electric field produces a magnetic field.' This phenomenon is called:
Correct : B. ampere maxwell\s law
31. The changes in the reflectivity/emissivity with time, is called:
Correct : C. temporal variation
32. Which one of the following statements is correct?
Correct : D. all of these
33. Due to perturbation of the orbit, satellite orbit parameters are frequently updated on
measurements carried out by its
Correct : B. five ground stations
34. Which one of the following helps to identify the objects on the earth surface?
Correct : B. signature
35. Pick up the correct statement from the following:
Correct : D. all of these
36. The reflection of solar energy is characterised by the water content in the leaf, in the reflective
optical infrared:
Correct : C. short wave-ir (1.3 -
37. The interaction of the electromagnetic radiation produced with a specific wave length to
illuminate a target on the terrain for studying its scattered radiance, is called:
Correct : B. active remote sensing
38. For interpolation of satellite data used for monitoring dynamic changes that occurs on the earth
surface, the most suitable orbit for the satellite is:
Correct : B. sun-synchronous orbit
39. Electromagnetic spectrum contains:
Correct : D. all of these
40. Which one of the following quantities forms the basis of radiometry?
Correct : D. all of these
41. According to the Snell's law if an electromagnetic wave is incident in a medium (refractive
index n1) on another medium (refractive index m2);
Correct : B. the angle of refraction r) is given by sin i
42. The refractive index of the ocean water:
Correct : A. increases with salinity
43. The normal altitude of GPS satellite is about
Correct : B. 20,200 km
44. Geodimeter is based on:
Correct : A. propagation of modulated light waves
45. The code based GPS receivers are generally used for:
Correct : D. all of these
46. Pick up the correct statement from the following:
Correct : D. all of these
47. While propagating through homogeneous, isotropic media,
Correct : C. both (a) and (b)
48. The arrangement of terrain features which provides attributes: the shape, size and texture of
objects, is called:
Correct : B. spatial variation
49. Which one of the following errors is produced by platform characteristics of the sensor?
Correct : D. all of these
50. Leaf reflectance depends primarily on:
Correct : D. all of these
51. If flying height of a spacecraft is H, the length of air base is B and the parallax difference between
two points is dp, then the difference in height
Correct : A. h = dp/(b/h)
52. Critical angle of electromagnetic radiation takes place if
Correct : D. angle of refraction is equal to 90°
53. Earth observations from a satellite platform provide:
Correct : D. all of these
54. 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
Correct : D. 100 km
55. Electromagnetic radiation:
Correct : D. all of these
56. Which one of the following residual biases involves the GPS accuracy?
Correct : D. all the above
57. 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?
Correct : A. height displacement of a will be less than that of b
58. The GPS space segment consists of Navigation Satellite Timing and Ranging whose number is:
Correct : D. 24
59. Pick up the important characteristic of a target which facilitates its identification from the
following:
Correct : D. all of these
60. The value of energy quantum for radiation of any frequency is proportional to:
Correct : A. the frequency
61. Which one of the following geometric errors of satellite sensors is random?
Correct : D. altitude variation
62. Pick up the correct statement from the following:
Correct : D. all of these
63. Which one of the following frequency regions is a part of sun's radiation?
Correct : D. all of these
64. The spectral region of the electromagnetic radiation which passes through the atmosphere
without much attenuation is known as:
Correct : B. atmospheric window
65. Which on
speed (C) of the electromagnetic wave is correct?
Correct : C. c = v
66. In GPS, receivers used are;
Correct : C. quartz clocks
67. For C band Synthetic Aperture Radar (SAR) with Doppler band width of 1300 Hz, the coherence
length loch is:
Correct : B. 230 km
68. Which one of the following attributes is not associated with digital maps
Correct : D. south arrow
69. The instruments which provide electromagnetic radiation of specified wave length or a band of
wave lengths to illuminate the earth surface are called:
Correct : C. active sensors
70. The most widely used antenna in GPS is
Correct : B. microstrip antenna
71. Orbital radius of GPS satellites is approximately:
Correct : B. 26,600 km
72. If electric permittivity and magnetic permeability of the medium are respectively and , then
the velocity (Cm) of the electromagnetic wave in the medium is given by:
Correct : B. cm
73. The part radiation due to scattered/diffused radiation entering the field of view of a remote
sensor other than that from the required target,
Correct : A. reduces the contrast of the image and also its sharpness
74. Pick up the correct statement from the following
Correct : D. all of these
75. Spatial variation in horizontal and vertical directions is caused due to:
Correct : D. all of these
76. The basic requirement of any sensor system is: