'A time varying electric field produces a magnetic field.' This phenomenon is called: Kirchoff’s law Faraday's law Hertz's law Ampere Maxwell's law TRUE ANSWER : ? YOUR ANSWER : ?
The basic requirement of any sensor system is: Spatial resolution All of these Radiometric resolution Spectral resolution 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 ~ 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 Positional accuracies ~ 5 - 10 m if rover is less than 5-10 km from reference station TRUE ANSWER : ? YOUR ANSWER : ?
Electromagnetic radiation: Is capable to travel across space Produces a time varying magnetic field and vice versa Once generated, remains self-propagating All of these TRUE ANSWER : ? YOUR ANSWER : ?
In the given figure the phase of Trough C is 3π/2 All of these B crossing is π Crest A is π/2 TRUE ANSWER : ? YOUR ANSWER : ?
If flying height of a spacecraft is H, the length of air base is B and the parallax difference between two points is dp, then the difference in height h = dp/(B/H) h = dp/(H/B) h = (H/B) dp h = (B/H) dp 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 100 km 25 km 50 km 75 km TRUE ANSWER : ? YOUR ANSWER : ?
Who coined the term, ‘Remote sensing’. Gaspard Felix Tournachon, a French scientist None of these Evelyn L. Pruitt, a geographer Wilbur Wright, an Italian scientist TRUE ANSWER : ? YOUR ANSWER : ?
Which one of the following statement is correct? The radiant energy which falls upon a surface is termed as irradiance The rate of transfer of radiant energy is called flux and is expressed in watts All of these Radiant energy expressed in Joules, is the energy associated with electromagnetic radiation TRUE ANSWER : ? YOUR ANSWER : ?
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 = 1/εμ Cm = 5/√εμ None of these Cm = 1/√8 μ TRUE ANSWER : ? YOUR ANSWER : ?