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- Question
Remote sensing techniques makes use of the properties of-----emitted, reflected or diffracted by the sensed objects:
Options- A. electric waves
- B. soundwaves
- C. electromagnetic waves
- D. wind waves
- Correct Answer
- electromagnetic waves
- 1. The arrangement of terrain features which provides attributes: the shape, size and texture of objects, is called :
Options- A. spectral variation
- B. spatial variation
- C. temporal variation
- D. None of these . Discuss
- 2. The entire range of the electromagnetic spectrum spans a large spectrum of wave lengths varying from:
Options- A. 10-10 to 106 m
- B. 10-8 to 106 m
- C. 10-10 to 1010 m
- D. 10-8 to 108 m Discuss
- 3. Pick up the correct statement from the following :
Options- A. When the electric field oscillates in the direction of the electric vector, a plane polarised wave is formed.
- B. When the electric vector is in the plane of incidence, vertical polarisation is formed.
- C. When the electric vector is at right angles to the plane of incidence, horizontal polarization wave is formed.
- D. The plane containing the incident ray and normal to the reflecting surface at the point of incidence is called the plane of incidence.
- E. All of these Discuss
- 4. If 0 is the angle of scan measured from the nadir, the ground distance swept by the sensor IFOV is proportional to :
Options- A. sin2?
- B. cos2?
- C. sec2?
- D. tan2? Discuss
- 5. The phase difference of the waves 1 and 2 at A in the given figure is :
Options- A. ?/4
- B. ?/2
- C. ?
- D. 3?/2 Discuss
- 6. Electromagnetic radiation :
Options- A. produces a time varying magnetic field and vice versa
- B. once generated, remains self-propagat-ing.
- C. is capable to travel across space
- D. consists of magnetic and electric fields
- E. All of these Discuss
- 7. Which one of the following statements regarding remote sensing is correct.
Options- 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) Discuss
- 8. Rayleigh's criteria for a rough surface is: (where letters carry their usual meanings).
Options- A. h > ?/? cos ?
- B. h = ?/8 cos ?
- C. h > ?/8 cos ?
- D. h < ?/8 cos ? Discuss
- 9. Pick up the correct statement from the following:
Options- 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 Organisation (ISRO) is responsible for the space technology and its application to various activities.
- D. All of these Discuss
- 10. Pick up the correct statement from the following:
Options- A. In remote sensing technique, the observation place, is called a platform
- B. Platforms may be either stationary or mobile
- C. Spatial resolution of the imaging system becomes poorer with increase of platform height.
- D. Area coverage of the imaging system increases with the increase of the platform altitude.
- E. All of these Discuss
Elements of Remote Sensing problems
Search Results
Correct Answer: spatial variation
Correct Answer: 10-10 to 106 m
Correct Answer: All of these
Correct Answer: sec2?
Correct Answer: ?/2
Correct Answer: All of these
Correct Answer: both (a) and (b)
Correct Answer: h > ?/8 cos ?
Correct Answer: All of these
Correct Answer: All of these
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