Elements of Remote Sensing problems
- 1. The maximum absorption of solar radiation due to ozone occurs at wave lengths:
Options- A. shorter than 0.3 ?m
- B. shorter than 0.2 ?m
- C. greater than 0.3 ?m
- D. None of these Discuss
Correct Answer: shorter than 0.3 ?m
- 2. 'A time varying magnetic field produces an electric field'. This phenomenon is known as
Options- A. Newton's law
- B. Kirchofflaw
- C. Ampere Maxwell law
- D. Faraday's law Discuss
Correct Answer: Faraday's law
- 3. 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?
Options- A. 1, 4, 5, 3, 2
- B. 5, 3, 2, 4, 1
- C. 5, 2, 3, 1, 4
- D. 1, 3, 2, 4, 5 Discuss
Correct Answer: 5, 2, 3, 1, 4
- 4. Phytoplanktons :
Options- A. are microscopic plants
- B. are the first link in all the aquatic and marine food chains
- C. convert solar energy, dissolved carbon and nitrogen into organic biomass
- D. All of these Discuss
Correct Answer: All of these
- 5. 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?
Options- A. 4, 1, 2, 3
- B. 2, 1, 3, 4
- C. 3, 2, 1, 4
- D. 1, 3, 4, 2 Discuss
Correct Answer: 2, 1, 3, 4
- 6. Electromagnetic waves are characterised by :
Options- A. frequency
- B. wave length
- C. intensity
- D. direction of travel and plane of polarisation.
- E. All of these Discuss
Correct Answer: All of these
- 7. Which one of the following can travel through empty space :
Options- A. sound waves
- B. water waves
- C. electromagnetic waves
- D. spring waves Discuss
Correct Answer: electromagnetic waves
- 8. The emission of electrons from a metal plate exposed to light depends on the :
Options- A. intensity of the light
- B. frequency of light
- C. both (a) and (b)
- D. neither (a) nor (b) Discuss
Correct Answer: both (a) and (b)
- 9. For accurate position fix, the three satellites:
Options- A. must be along a common arc
- B. must be in vertical line above the receiver
- C. must be widely separated and well distributed
- D. must be such that one satellite is overhead of the receiver and other two widely separated Discuss
Correct Answer: must be widely separated and well distributed
- 10. Pick up the incorrect statement regarding the optical infrared region of the electromagnetic spectrum from the following :
Options- A. visible region, 0.4 ?m - 0.7 ?m
- B. short wave infrared region, 0.7 ? m - 1.5 ?m
- C. near infrared region, 1.5 ? m - 3.0 ?m
- D. microwave infrared region, 3.0 ? m - 8.0 ?m Discuss
Correct Answer: short wave infrared region, 0.7 ? m - 1.5 ?m
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