Elements Of Remote Sensing The changes in the reflectivity/emissivity with time, is called: Spectral variation Spatial variation None of these Temporal variation Spectral variation Spatial variation None of these Temporal variation 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 Fresnel reflection None of these Fresnel refraction Snell's law Fresnel reflection None of these Fresnel refraction ANSWER DOWNLOAD EXAMIANS APP
Elements Of Remote Sensing Which one of the following quantities forms the basis of radiometry? Radiant intensity (I) Radiant flux (φ) Radiant energy (Q) All of these Radiant intensity (I) Radiant flux (φ) Radiant energy (Q) All of these 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 Neither (A) nor (B) Both (A) and (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 Neither (A) nor (B) Both (A) and (B) The angle of incidence is equal to the angle of refraction 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 The ratio of the total solar radiant energy returned by a planetary body to the total radiant energy incident on the body, the called: Reflectance factor Reflectance None of these Albedo Reflectance factor Reflectance None of these Albedo ANSWER DOWNLOAD EXAMIANS APP
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