Elements of Remote Sensing MCQs

A. Identification

B. Recognition of objects

C. Judging the significance of objects

D. All of these

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

A. Radiant energy (Q)

B. Radiant flux (Φe )

C. Radiant intensity (I)

D. All of these

A. 8

B. 12

C. 16

D. 24

A. Spectral variation

B. Spatial variation

C. Temporal variation

D. All of these

A. Colour

B. Symbology

C. Legends

D. South arrow

A. When the electric field oscillates in the direction of the electric vector, a plane polarised wave is formed

B. When the electric vector is in the plane of incidence, vertical polarisation is formed

C. When the electric vector is at right angles to the plane of incidence, horizontal polarization wave is formed

D. All of these

A. The nominal altitude is about 20,200 km

B. The inclination of axis satellite is 55°

C. The satellite transmits two L band signals (L1 with 1575.42 MHz and L2 with 1276.6 MHz)

D. All of these

A. Focal length

B. Flying height

C. Ground elevation

D. None of these

A. Satellite dependent biases due to uncertainty in the orbital parameters of the satellite

B. Receiver -dependent biases due to clock stability with line

C. Signal propagation biases due to the sphere and troposphere propagation

D. All the above