A. 25 km
B. 50 km
C. 75 km
D. 100 km
Elements of Remote Sensing
Electromagnetic radiation_______________?
A. Produces a time varying magnetic field and vice versa
B. Once generated, remains self-propagating
C. Is capable to travel across space
D. All of these
Who coined the term, ‘Remote sensing_______________?
A. Evelyn L. Pruitt, a geographer
B. Gaspard Felix Tournachon, a French scientist
C. Wilbur Wright, an Italian scientist
D. None of these
Which one of the following statements regarding remote sensing is correct ?
A. The interaction of the electromagnetic radiation with the target
B. The emission of electromagnetic radiation from the target
C. Both A. and B.
D. Neither A. nor B.
Which one the following is a correct statement ?
A. The vertical section of the soil extending into the parent material, is called profile
B. The layers of the soil parallel to the earth surface are called horizons
C. The transitional layer between two adjoining horizons is called boundary
D. All of these
The instruments which provide electromagnetic radiation of specified wave length or a band of wave lengths to illuminate the earth surface are called________________?
A. Sensors
B. Passive sensors
C. Active sensors
D. None of these
Pick up the correct statement from the following?
A. The ratio of the up flux and down flux just above the snow surface, is called albedo
B. Spectral albedo of snow is calculated for the semi-infinite snow thickness
C. Water equivalent height of snow is the height of water column obtained by melting snow
D. All of these
Which one of the following statement is incorrect regarding the electromagnetic radiation ?
A. These are produced by the motion of electric charge
B. The oscillation of charged particles sets up changing electric fields
C. The changing electric fields induce the changing magnetic fields in the surrounding medium
D. None of these
Pick up the correct statement from the following ?
A. In remote sensing technique, the observation place, is called a platform
B. Platforms may be either stationary or mobile
C. Spatial resolution of the imaging system becomes poorer with increase of platform height
D. All of these
A and B are two towers of equal height diametrically opposite on either side of the nadir point, at 3 km and 5 km distances. Which one of the following statements is correct?
A. Height displacement of A will be less than that of B
B. Height displacement of B will be less than that of A
C. Height displacement of A and B is equal
D. Height displacement of A and B will be towards each other
