Elements Of Remote Sensing The instruments which provide electromagnetic radiation of specified wave length or a band of wave lengths to illuminate the earth surface are called: Sensors Active sensors Passive sensors None of these Sensors Active sensors Passive sensors None of these ANSWER DOWNLOAD EXAMIANS APP
Elements Of Remote Sensing "An Electromagnetic wave falls on to a boundary between two losses 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: Snell's law None of these Fresnel refraction Fresnel reflection Snell's law None of these Fresnel refraction Fresnel reflection ANSWER DOWNLOAD EXAMIANS APP
Elements Of Remote Sensing According to the Snell's law if an electromagnetic wave is incident in a medium (refractive index n₁) on another medium (refractive index m₂); The angle of refraction (θr) is given by sin θ₂ = (n₁/n₂) sin θi Both (A) and (B) Neither (A) nor (B) The angle of incidence is equal to the angle of refraction The angle of refraction (θr) is given by sin θ₂ = (n₁/n₂) sin θi Both (A) and (B) Neither (A) nor (B) The angle of incidence is equal to the angle of refraction ANSWER DOWNLOAD EXAMIANS APP
Elements Of Remote Sensing The GPS space segment consists of Navigation Satellite Timing and Ranging whose number is : 16 12 24 8 16 12 24 8 ANSWER DOWNLOAD EXAMIANS APP
Elements Of Remote Sensing Which one of the following relationship between the wave length (λ), and frequency and the speed (C) of the electromagnetic wave is correct? C = v + λ C = 1/λv C = λ/v C = vλ C = v + λ C = 1/λv C = λ/v C = vλ ANSWER DOWNLOAD EXAMIANS APP
Elements Of Remote Sensing If flying height of a spacecraft is H, the length of air base is B and the parallax difference between two points is dp, then the difference in height h = (B/H) dp h = (H/B) dp h = dp/(B/H) h = dp/(H/B) h = (B/H) dp h = (H/B) dp h = dp/(B/H) h = dp/(H/B) ANSWER DOWNLOAD EXAMIANS APP
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