Elements of Remote Sensing MCQs

Question 1

Pick up the correct statement from the following :

Accepted Answer

All of these

Answer

The first man-made satellite, SputnikI' was launched on 4th October, 1957.

Answer

The United State's Explorer 6 transmitted the first picture of the earth in August 1959

Answer

Television Infrared Observation Satellite (TIROS) designed for meteorological observations, started systematic earth observations from space from 1 April, 1960

Question 2

Who coined the term, 'Remote sensing'.

Accepted Answer

Evelyn L. Pruitt, a geographer

Answer

Gaspard Felix Tournachon, a French scientist

Answer

Wilbur Wright, an Italian sciencist

Answer

None of these

Question 3

Pick up the correct statement from the following :

Accepted Answer

All of these

Answer

Indian space effort started in 1962 with the establishment of a rocket.

Answer

Development of space (DOS) was established by the Government of India in 1972.

Answer

Indian Space Research Organisation (ISRO) is responsible for the space technology and its application to various activities.

Question 4

While propagating through homogeneous, isotropic media,

Accepted Answer

both (a) and (b)

Answer

directions of both the fields are orthogonal

Answer

both the fields are at right angles to the direction of propagation.

Answer

niether (a) nor (b)

Question 5

Electromagnetic waves are characterised by :

Accepted Answer

direction of travel and plane of polarisation.

Answer

frequency

Answer

wave length

Answer

intensity

Question 6

Pick up the correct statement from the following :

Accepted Answer

All of these

Answer

The distance between two successive crests or troughs of a wave, is called, the wave length

Answer

The wave length is measured in metres and a fraction of a metre

Answer

The wave length is generally denoted by X.

Question 7

Electromagnetic spectrum contains :

Accepted Answer

All of these

Answer

gamma rays (wave length < 10 -10m)

Answer

ultraviolet rays (wave length < 10 -6m)

Answer

infrared rays (wave length < 10 4m)

Question 8

Pick up the incorrect statement regarding the optical infrared region of the electromagnetic spectrum from the following

Accepted Answer

short wave infrared region, 0.7 g m - 1.5 gm

Answer

visible region, 0.4 g m -0.7 gm

Answer

near infrared region, 1.5 g m -3.0 gm

Answer

microwave infrared region, 3.0 g m -8.0 gm

Question 9

Which one of the following statements is correct ?

Accepted Answer

All of these

Answer

The ratio of the pet mitivity of a medium and the free space, is called relative permitivity.

Answer

Dielectric constant is a pure number and has no dimensions.

Answer

The dielectric constant of pure water is 80.