Which one of the following statement is incorrect regarding the electromagnetic radiation? The oscillation of charged particles sets up changing electric fields The changing electric fields induce the changing magnetic fields in the surrounding medium None of these These are produced by the motion of electric charge TRUE ANSWER : ? YOUR ANSWER : ?
The normal altitude of GPS satellite is about 20,200 km 36,100 km 24,400 km 16,200 km TRUE ANSWER : ? YOUR ANSWER : ?
Which one of the following parameters is accurate for DGPS? Positional accuracies ~ 5 - 10 m if rover is less than 25 km Positional accuracies ~ 5 - 10 m if rover is less than 5-10 km from reference station Positional accuracies ~ 2 - 5 m if rover is less than 2-5 km from the reference station Positional accuracies ~ 1 - 2 m if rover is less than 1-2 km from the reference station TRUE ANSWER : ? YOUR ANSWER : ?
The GPS space segment consists of Navigation Satellite Timing and Ranging whose number is : 24 12 8 16 TRUE ANSWER : ? YOUR ANSWER : ?
The reflection of solar energy is characterized by the water content in the leaf, in the reflective optical infrared: Visible (0.4 - 0.7 μm) region None of these Near-IR (0.7 - 1.3 μm) region Short wave-IR (1.3 - 2.7 μm) region TRUE ANSWER : ? YOUR ANSWER : ?
A passive sensor uses: Sun as the source of energy None of these Its own source of energy Flash light as a source of energy TRUE ANSWER : ? YOUR ANSWER : ?
Which one of the following residual biases involves the GPS accuracy? Signal propagation biases due to the sphere and troposphere propagation Receiver-dependent biases due to clock stability with line All listed here Satellite dependent biases due to uncertainty in the orbital parameters of the satellite TRUE ANSWER : ? YOUR ANSWER : ?
Which one of the following relationship between the wave length (λ), and frequency and the speed (C) of the electromagnetic wave is correct? C = vλ C = λ/v C = v + λ C = 1/λv TRUE ANSWER : ? YOUR ANSWER : ?
Who coined the term, ‘Remote sensing’. None of these Gaspard Felix Tournachon, a French scientist Evelyn L. Pruitt, a geographer Wilbur Wright, an Italian scientist TRUE ANSWER : ? YOUR ANSWER : ?
Leaf reflectance depends primarily on: The pigments All of these Equivalent water content Internal cell structure TRUE ANSWER : ? YOUR ANSWER : ?