ELEMENTS OF REMOTE SENSING QUIZ

Which one of the following statement is correct?

The radiant energy which falls upon a surface is termed as irradiance

The rate of transfer of radiant energy is called flux and is expressed in watts

All of these

Radiant energy expressed in Joules, is the energy associated with electromagnetic radiation

TRUE ANSWER : ?
YOUR ANSWER : ?

Consider the following statements regarding the satellite imaging: 1. The satellite orbit is fixed in the inertial space 2. During successive across-track imaging, the earth rotates beneath the sensor 3. The satellite images a skewed areaWhich one of the following statements is/are correct?

1, 2, 3

1, 2

1, 3

2, 3

TRUE ANSWER : ?
YOUR ANSWER : ?

Which one of the following errors is produced by platform characteristics of the sensor?

Altitude

Orbit drift

All of these

Altitude variation

TRUE ANSWER : ?
YOUR ANSWER : ?

The basic requirement of any sensor system is:

Spatial resolution

Spectral resolution

All of these

Radiometric resolution

TRUE ANSWER : ?
YOUR ANSWER : ?

Rayleigh's criteria for a rough surface is: (where letters carry their usual meanings).

h < λ/8 cos θ

h = λ/8 cos θ

h > λ/Δ cos θ

h > λ/8 cos θ

TRUE ANSWER : ?
YOUR ANSWER : ?

‘A’ and ‘B’ are two towers of equal height diametrically opposite on either side of the nadir point, at 3 km and 5 km distances. Which one of the following statements is correct?

Height displacement of A and B is equal

Height displacement of A will be less than that of B

Height displacement of B will be less than that of A

Height displacement of A and B will be towards each other

TRUE ANSWER : ?
YOUR ANSWER : ?

The maximum sun's radiation occurs around:

None of these

0.55 μ wave length

0.7 μ wave length

0.4 μm wave length

TRUE ANSWER : ?
YOUR ANSWER : ?

The changes in the reflectivity/emissivity with time, is called:

None of these

Spatial variation

Spectral variation

Temporal variation

TRUE ANSWER : ?
YOUR ANSWER : ?

Crop Acreage and Production Estimation (CAPE) was funded and taken up in 1983 by:

USA

European Union

India

Russia

TRUE ANSWER : ?
YOUR ANSWER : ?

In case of reflection and refraction of electromagnetic radiation,

Angle of incidence = angle of reflection

Angle of refraction = sum of the angles of incidence and refraction

All listed here

Angle of incidence = angle of refraction

TRUE ANSWER : ?
YOUR ANSWER : ?

↑