IndiaBIX

Civil Engineering - Elements of Remote Sensing

Exercise : Elements of Remote Sensing - Section 3
36.
Electromagnetic waves are characterised by :
frequency
wave length
intensity
direction of travel and plane of polarisation.
All of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
The solid angle subtended by the sphere is :
2π
3π
4π
6π
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
For accurate position fix, the three satellites:
must be along a common arc
must be in vertical line above the receiver
must be widely separated and well distributed
must be such that one satellite is overhead of the receiver and other two widely separated
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
Pick up the correct statement from the following:
Water molecules and salt-ions in the ocean scatter the lower wave length more
An increase in the back scattering coefficient with shorter wave length gives a deep blue colour for clear oceanic water
The ratio of the upwelling irradiance just below the surface and downwelling irradiance just above the surface is called reflectance ratio.
All of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
Pick up the correct statement from the following:
The wave length of gamma rays is 10-10 m
The wave length of radio rays is 106 m
The visible length occupies a small portion of the electromagntic spectrum extending roughly from 0.4 μ m to 0.7μm wave length.
All of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers