ELEMENTS OF REMOTE SENSING QUIZ

Radiant intensity (I)

Radiant flux (φ)

All of these

Radiant energy (Q)

All of these

Infrared rays (wave length < 10⁻⁴ m)

Ultraviolet rays (wave length < 10⁻⁶ m)

Gamma rays (wave length < 10⁻¹⁰ m)

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

Angle of incidence = angle of reflection

All listed here

Angle of incidence = angle of refraction

The changing electric fields induce the changing magnetic fields in the surrounding medium

The oscillation of charged particles sets up changing electric fields

These are produced by the motion of electric charge

None of these

None of these

Constant in time and space

Constant in space

Constant in time

100 km

50 km

75 km

25 km

Reduces pigment concentration

Affects leaf color

Increase the visible reflectivity

All of these

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

All of these

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

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

Four ground stations

Three ground stations

Six ground stations

Five ground stations

Both (A) and (B)

The angle of refraction (θr) is given by sin θ₂ = (n₁/n₂) sin θi

Neither (A) nor (B)

The angle of incidence is equal to the angle of refraction