Elements Of Remote Sensing The changes in the reflectivity/emissivity with time, is called: Temporal variation Spectral variation None of these Spatial variation Temporal variation Spectral variation None of these Spatial variation 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 = λ/v C = 1/λv C = v + λ C = vλ C = λ/v C = 1/λv C = v + λ C = vλ ANSWER DOWNLOAD EXAMIANS APP
Elements Of Remote Sensing For C band Synthetic Aperture Radar (SAR) with Doppler band width of 1300 Hz, the coherence length loch is: 250 km 230 km 500 km 130 km 250 km 230 km 500 km 130 km ANSWER DOWNLOAD EXAMIANS APP
Elements Of Remote Sensing In GPS, receivers are used are; Atomic clocks Quartz clocks Electronic clocks Mechanical clocks Atomic clocks Quartz clocks Electronic clocks Mechanical clocks 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: None of these Fresnel refraction Snell's law Fresnel reflection None of these Fresnel refraction Snell's law 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); Neither (A) nor (B) The angle of incidence is equal to the angle of refraction Both (A) and (B) The angle of refraction (θr) is given by sin θ₂ = (n₁/n₂) sin θi Neither (A) nor (B) The angle of incidence is equal to the angle of refraction Both (A) and (B) The angle of refraction (θr) is given by sin θ₂ = (n₁/n₂) sin θi ANSWER DOWNLOAD EXAMIANS APP
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