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Elements Of Remote Sensing

Elements Of Remote Sensing
Which one of the following relationship between the wave length (λ), and frequency and the speed (C) of the electromagnetic wave is correct?

C = 1/λv
C = v + λ
C = vλ
C = λ/v

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Elements Of Remote Sensing
While propagating through homogeneous, isotropic media,

Both the fields are at right angles to the direction of propagation
Neither (A) nor (B)
Both (A) and (B)
Directions of both the fields are orthogonal

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Elements Of Remote Sensing
Which one of the following errors is produced by platform characteristics of the sensor?

Orbit drift
All of these
Altitude
Altitude variation

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Elements Of Remote Sensing
A passive sensor uses:

Sun as the source of energy
None of these
Flash light as a source of energy
Its own source of energy

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Elements Of Remote Sensing
Pick up the important characteristic of a target which facilitates its identification from the following:

Spatial variation
Spectral variation
All of these
Temporal variation

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Elements Of Remote Sensing
The various stages occuring in GPS system are described below:
1. Generation of an output to the user
2. Detection of the GPS signals
3. Processing the data in the built-in-computer
4. Decoding the GPS signal.
The correct sequence of the stages is:

2, 3, 4, 1
1, 2, 3, 4
2, 4, 3, 1
3, 1, 2, 4

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