Which one of the following parameters is considered to determine the reflectance of a vegetation canopy? Look angle All of these Azimuth angle Solar zenith angle TRUE ANSWER : ? YOUR ANSWER : ?
Who coined the term, ‘Remote sensing’. Gaspard Felix Tournachon, a French scientist Wilbur Wright, an Italian scientist Evelyn L. Pruitt, a geographer None of these TRUE ANSWER : ? YOUR ANSWER : ?
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 Albedo None of these Reflectance TRUE ANSWER : ? YOUR ANSWER : ?
The instruments which provide electromagnetic radiation of specified wave length or a band of wave lengths to illuminate the earth surface are called: Active sensors None of these Passive sensors Sensors TRUE ANSWER : ? YOUR ANSWER : ?
DGPS is based on the concept that bias errors in the position of locations in a given local area, are same if their distances are within 75 km 25 km 50 km 100 km TRUE ANSWER : ? YOUR ANSWER : ?
The reflectance from a surface is called specular reflection if it follows: All of these Planktan Snell’s law Lambert TRUE ANSWER : ? YOUR ANSWER : ?
'A time varying electric field produces a magnetic field.' This phenomenon is called: Ampere Maxwell's law Hertz's law Kirchoff’s law Faraday's law TRUE ANSWER : ? YOUR ANSWER : ?
The maximum sun's radiation occurs around: 0.7 μ wave length 0.55 μ wave length 0.4 μm wave length None of these TRUE ANSWER : ? YOUR ANSWER : ?
Due to scan geometry of a satellite sensor: The off-nadir resolution is degraded All of these The ground distance swept by the senor, IFOV is proportional to sec2θ, where θ is the angle of scan measured from the nadir The details towards the edge of the scan get compressed TRUE ANSWER : ? YOUR ANSWER : ?