Elements of Remote Sensing MCQ with Answers - Set 05 - ObjectiveBooks

# Practice Test: Question Set - 05

1. Electromagnetic spectrum contains:
(A) Gamma rays (wave length < 10-10 m)
(B) Ultraviolet rays (wave length < 10-6 m)
(C) Infrared rays (wave length < 10-4 m)
(D) All of these

2. Which one of the following quantities forms the basis of radiometry?
(D) All of these

3. According to the Snell's law if an electromagnetic wave is incident in a medium (refractive index n1) on another medium (refractive index m2);
(A) The angle of incidence is equal to the angle of refraction
(B) The angle of refraction (θr) is given by sin θ₂ = (n₁/n₂) sin θi
(C) Both (a) and (b)
(D) Neither (a) nor (b)

4. The refractive index of the ocean water:
(A) Increases with salinity
(B) Increases with temperature
(C) Decreases with salinity
(D) Decreases with temperature

5. Pick up the correct definition from the following with response to GIS.
(A) Common boundary between two areas of a locality is known as adjacency
(B) The area features which are wholly contained within another area feature, is known so containment
(C) The geometric property which describes the linkage between line features is defined as connectivity
(D) All of these

6. The phase difference of the waves 1 and 2 at A in the given figure is:
(A) π/4
(B) π/2
(C) π
(D) 3π/2

7. The various stages occuring in GPS system are described below:
1. Generation of an output to the user
2. Detection of the GPS signals
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

8. The normal altitude of GPS satellite is about
(A) 16,200 km
(B) 20,200 km
(C) 24,400 km
(D) 36,100 km

9. Geodimeter is based on:
(A) Propagation of modulated light waves
(C) The visible light as carrier with frequency of the order of 5 × 1014 Hz