41. Which one of the following statement is incorrect regarding the electromagnetic radiation? A. These are produced by the motion of electric charge B. The oscillation of charged particles sets up changing electric fields C. The changing electric fields induce the changing magnetic fields in the surrounding medium D. None of these Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
42. In the given figure the phase of A. Crest A is $$\frac{\pi }{2}$$ B. B crossing is $$\pi $$ C. Trough C is $$\frac{{3\pi }}{2}$$ D. All of these Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
43. Which one of the following helps to identify the objects on the earth surface? A. Atmospheric window B. Signature C. Radiometric error D. None of these Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
44. The interaction of the electromagnetic radiation produced with a specific wave length to illuminate a target on the terrain for studying its scattered radiance, is called: A. Passive remote sensing B. Active remote sensing C. Neutral remote sensing D. None of these Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
45. The remote sensing techniques applied for the earth's surface features, is generally confined to the following wave lengths: A. 0.4 to 1.3, 1.5 to 1.8, 2.2 to 2.6 μm B. 2.2 to 2.6, 3.0 to 3.6, 4.2 to 5.0 μm C. 4.2 to 5.0, 7.0 to 15.0 μm and 1 cm to 30 cm D. All of these Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
46. Orbital radius of GPS satellites is approximately: A. 15,200 km B. 26,600 km C. 18,400 km D. 36,000 km Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
47. Spatial variation in horizontal and vertical directions is caused due to: A. Physical weathering of rocks B. Chemical weathering of rocks C. Biological weathering of rocks D. All of these Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
48. Which one of the following quantities forms the basis of radiometry? A. Radiant energy (Q) B. Radiant flux (φ) C. Radiant intensity (I) D. All of these Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
49. The arrangement of terrain features which provides attributes: the shape, size and texture of objects, is called: A. Spectral variation B. Spatial variation C. Temporal variation D. None of these Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
50. Which one of the following statements is correct? A. During the day, earth reflects solar radiation B. During the day, earth reflects both solar radiations the emission from its surface C. During the night, earth emits radiation from its surface D. All of these Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board