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- Question
Which one of the following statements is correct?
Options- A. During the day, earth reflects solar radiation
- B. During the day earth reflects both solar radiation the emission from its surface
- C. During the night, earth emits radiation from its surface
- D. All of these
- Correct Answer
- All of these
- 1. The most widely used antenna in GPS is
Options- A. Parabolid antenna
- B. Microstrip antenna
- C. Horn antenna
- D. Slotted antenna Discuss
- 2. Pick up the correct statement from the following :
Options- A. Topology describes the geometric characteristic of objects which do not change under transformations and are independent of any coordinate system
- B. Topological characteristics of an object are independent of scale measurement
- C. The three elements of topology are adjacency, containment, and connectivity
- D. All of these Discuss
- 3. Pick up the correct statement from the following:
Options- A. Phase of a wave is expressed as a fraction of a period with respect to a refrence
- B. Phase is usually specified by angular measure with one period being 360°
- C. The reference for finding the phase of a wave is taken from the previous passage through zero from the negative to the positive direction.
- D. All of these Discuss
- 4. Which one of the following statements is correct?
Options- A. Snow albedo falls at all wave length with the increase of grain size
- B. The effect of grain size on reflection is maximum in the near-IR region
- C. The effect of grain size on reflection is low in the visible region of the spectrum
- D. All of these Discuss
- 5. The various stages occuring in GPS system are described below :
1. Generation of an output to the user
2. Detection of the GPS signal
3. Processing the data in the built-in-computer
4. Decoding the GPS signal.
The correct sequence of the stages is :
Options- A. 1, 2, 3, 4
- B. 2, 3, 4, 1
- C. 2, 4, 3, 1
- D. 3, 1, 2 , 4 Discuss
- 6. "An Electromagnetic wave falls on to a boundary between two loss less homogeneous media with different refractive indices, a part of the wave is reflected back to the incident medium and the rest is transmitted on to the second media". This phenomenon is known as :
Options- A. Fresnel reflection
- B. Fresnel refraction
- C. Snell's law
- D. None of these Discuss
- 7. The part radiation due to scattered/diffused radiation entering the field of view of a remote sensor other than that from the required target,
Options- A. reduces the contrast of the image and also its sharpness
- B. increases the contrast of the image but reduces the sharpness
- C. increases both the contrast and sharpness
- D. reduces the contrast but increases the sharpness Discuss
- 8. Which one of the following helps to identify the objects on the earth surface?
Options- A. atmospheric window
- B. signature
- C. radiometric error
- D. None of these Discuss
- 9. Pick up the correct statement from the following:
Options- A. The surface defined by the locus of points having same phase, is called a wave front.
- B. The wave whose surface of constant phase are parallel planes, is known as a plane wave.
- C. The relative phase difference between the waves is important and not the absolute phase of a point on the wave
- D. All of these Discuss
- 10. In the given figure the phase of
Options- A. crest A is ?/2
- B. B crossing is ?
- C. trough C is 3 ?/2
- D. All of these Discuss
Elements of Remote Sensing problems
Search Results
Correct Answer: Microstrip antenna
Correct Answer: All of these
Correct Answer: All of these
Correct Answer: All of these
Correct Answer: 2, 4, 3, 1
Correct Answer: Fresnel reflection
Correct Answer: reduces the contrast of the image and also its sharpness
Correct Answer: signature
Correct Answer: All of these
Correct Answer: All of these
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