Civil Engineering - Elements of Remote Sensing

Exercise :: Elements of Remote Sensing - Section 1

36. 

"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 :

A. Fresnel reflection
B. Fresnel refraction
C. Snell's law
D. None of these

Answer: Option A

Explanation:

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37. 

Which one of the following relationship between the wave length (λ), and frequency and the speed (C) of the electromagnetic wave is correct ?

A. C = v + λ
B.
C. C = vλ
D.

Answer: Option C

Explanation:

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38. 

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 :

A. 1, 2, 3, 4
B. 2, 3, 4, 1
C. 2, 4, 3, 1
D. 3, 1, 2 , 4

Answer: Option C

Explanation:

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39. 

The reflection of solar energy is characterised by the water content in the leaf, in the reflective optical infrared:

A. visible (0.4 - 0.7 μm) region
B. near-IR (0.7 - 1.3 μm) region
C. short wave-IR (1.3 - 2.7 μm) region
D. None of these

Answer: Option C

Explanation:

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40. 

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

Answer: Option D

Explanation:

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