Elements of Remote Sensing MCQs

Question 1

Depending upon the nature of the targeted object and the wave length of the electromagnetic radiation incident on it, the radiation gets :

Accepted Answer

All of these

Answer

reflected

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absorbed

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re-radiated

Question 2

The arrangement of terrain features which provides attributes: the shape, size and texture of objects, is callea

Accepted Answer

spatial variation

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spectral variation

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temporal variation

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None of these

Question 3

Pick up the correct statement from the following :

Accepted Answer

All of these

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A graphical representation of spectral reflectance versis the various growth stages of a crop, depicts a phenologie pattern

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The changes in the polarisation of the radiation reflected or emitted by an object, is known as polarisation variation,

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The degree of polarisation is a characteristic of the object which helps in the identification of the object.

Question 4

The instruments which provide electromagnetic radiation of specified wave length or a band of wave lengths to illuminate the earth surface, are called :

Accepted Answer

active sensors

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sensonrs

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passive sensors

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None of these ?

Question 5

Pick up the correct statement from the following :

Accepted Answer

All of these

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In remote sensing technique, the observation place, is called a platform

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Platforms may be either stationary or mobile

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Spatial resolutr of the imaging system becomes poorer with inc ase of platform height.

Question 6

Earth observations from a satellite platform provides:

Accepted Answer

All of these

Answer

synoptic view of a large area

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constant solar zenith angles and similar illumination conditions.

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repetitive observations of the same area with intervals of a few minutes to a few weeks

Question 7

The altitudinal distance of a geostationary satelite from the earth is about :

Accepted Answer

36,000 km

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26,000 km

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30,000 km

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44000 km

Question 8

For interpolation of satellite data used for monitoring dynamic changes that occure on the earth surface, the most suitable orbit for the satellite is

Accepted Answer

sun-synchronous orbit

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circular orbit

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near polar orbit

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None of these

Question 9

Pick up the correct statement from the following :

Accepted Answer

All of these

Answer

Photography was developed in 1826

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Balloons were used as stable platform for aerial photography in 1903

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The first aerial photography from an aerocraft was made by Willeur Wright in 1909 in Italy.