Elements Of Remote Sensing Critical angle of electromagnetic radiation takes place if Angle of refraction is equal to 90° Angle of incidence is equal to 90° Angle of incidence is equal to angle of refraction Angle of incidence is greater than the angle of refraction Angle of refraction is equal to 90° Angle of incidence is equal to 90° Angle of incidence is equal to angle of refraction Angle of incidence is greater than the angle of refraction ANSWER DOWNLOAD EXAMIANS APP
Elements Of Remote Sensing Orbital radius of GPS satellites is approximately: 26,600 km 15,200 km 36,000 km 18,400 km 26,600 km 15,200 km 36,000 km 18,400 km ANSWER DOWNLOAD EXAMIANS APP
Elements Of Remote Sensing If electric permittivity and magnetic permeability of the medium are respectively ‘ε’ and ‘μ’, then the velocity (Cm) of the electromagnetic wave in the medium is given by: Cm = 5/√εμ Cm = 1/εμ Cm = 1/√8 μ None of these Cm = 5/√εμ Cm = 1/εμ Cm = 1/√8 μ None of these 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: 230 km 130 km 500 km 250 km 230 km 130 km 500 km 250 km 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); 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 Neither (A) nor (B) The angle of incidence is equal to the angle of refraction ANSWER DOWNLOAD EXAMIANS APP
Elements Of Remote Sensing Electromagnetic spectrum contains: Ultraviolet rays (wave length < 10⁻⁶ m) Infrared rays (wave length < 10⁻⁴ m) Gamma rays (wave length < 10⁻¹⁰ m) All of these Ultraviolet rays (wave length < 10⁻⁶ m) Infrared rays (wave length < 10⁻⁴ m) Gamma rays (wave length < 10⁻¹⁰ m) All of these ANSWER DOWNLOAD EXAMIANS APP
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