Elements of Remote Sensing MCQs

Question 1

Leaf reflectance depends primarily on:

Accepted Answer

All of these

Answer

The pigments

Answer

Internal cell structure

Answer

Equivalent water content

Question 2

The code based GPS receivers are generally used for:

Accepted Answer

All of these

Answer

Vehicle tracking

Answer

Land navigation

Answer

Trans movement

Question 3

Which one of the following statements regarding remote sensing is correct?

Accepted Answer

Both (A) and (B)

Answer

The interaction of the electromagnetic radiation with the target

Answer

The emission of electromagnetic radiation from the target

Answer

Neither (A) nor (B)

Question 4

The object of photo-interpretation is:

Accepted Answer

All of these

Answer

Identification

Answer

Recognition of objects

Answer

Judging the significance of objects

Question 5

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:

Accepted Answer

2, 4, 3, 1

Answer

1, 2, 3, 4

Answer

2, 3, 4, 1

Answer

3, 1, 2, 4

Question 6

Pick up the correct statement from the following:

Accepted Answer

All of these

Answer

A graphical representation of spectral reflectance verses the various growth stages of a crop, depicts a phonologic pattern

Answer

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

Answer

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

Question 7

Pick up the correct statement from the following:

Accepted Answer

All of the above

Answer

For the same feature, the photograph taken from the satellite vertically above the aircraft, the height displacement is lesser than the aerial photograph

Answer

The scale of the aerial photograph depends upon the scale of the topography

Answer

The feature at the principal point has no height displacement

Question 8

Pick up the correct statement from the following:

Accepted Answer

All of these

Answer

Frequency is the number of wave crests passing a fixed point in one second

Answer

Frequency of a wave is measured in Hertz (Hz)

Answer

Amplitude of a wave is the height of its crust from the mid-point

Question 9

Pick up the correct statement from the following:

Accepted Answer

All of these

Answer

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

Answer

Platforms may be either stationary or mobile

Answer

Spatial resolution of the imaging system becomes poorer with increase of platform height