Elements Of Remote Sensing 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 = 5/√εμ Cm = 1/εμ Cm = 1/√8 μ None of these Cm = 5/√εμ Cm = 1/εμ Cm = 1/√8 μ None of these ANSWER DOWNLOAD EXAMIANS APP
Elements Of Remote Sensing Remote sensing techniques make use of the properties of ___________ emitted, reflected or diffracted by the sensed objects: Sound waves Electromagnetic waves Wind waves Electric waves Sound waves Electromagnetic waves Wind waves Electric waves ANSWER DOWNLOAD EXAMIANS APP
Elements Of Remote Sensing The coherence length over which there is a strong relationship between amplitudes is; None of these Inversely proportional to the bandwidth Directly proportional to the bandwidth The square of the bandwidth None of these Inversely proportional to the bandwidth Directly proportional to the bandwidth The square of the bandwidth ANSWER DOWNLOAD EXAMIANS APP
Elements Of Remote Sensing Earth observations from a satellite platform provide: Synoptic view of a large area All of these Constant solar zenith angles and similar illumination conditions Repetitive observations of the same area with intervals of a few minutes to a few weeks Synoptic view of a large area All of these Constant solar zenith angles and similar illumination conditions Repetitive observations of the same area with intervals of a few minutes to a few weeks ANSWER DOWNLOAD EXAMIANS APP
Elements Of Remote Sensing While propagating through homogeneous, isotropic media, Both the fields are at right angles to the direction of propagation Directions of both the fields are orthogonal Neither (A) nor (B) Both (A) and (B) Both the fields are at right angles to the direction of propagation Directions of both the fields are orthogonal Neither (A) nor (B) Both (A) and (B) ANSWER DOWNLOAD EXAMIANS APP
Elements Of Remote Sensing The changes in the reflectivity/emissivity with time, is called: Temporal variation None of these Spectral variation Spatial variation Temporal variation None of these Spectral variation Spatial variation ANSWER DOWNLOAD EXAMIANS APP
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