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Elements Of Remote Sensing

Elements Of Remote Sensing
Which one of the following quantities forms the basis of radiometry?

Radiant flux (φ)
All of these
Radiant energy (Q)
Radiant intensity (I)

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Elements Of Remote Sensing
In case of reflection and refraction of electromagnetic radiation,

Angle of incidence = angle of refraction
Angle of incidence = angle of reflection
All listed here
Angle of refraction = sum of the angles of incidence and refraction

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Elements Of Remote Sensing
Repetitive observations of the same area at equal interval of time are useful to monitor the dynamic phenomena:

Snow cover
All of these
Vegetative cover
Cloud evolution

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Elements Of Remote Sensing
For C band Synthetic Aperture Radar (SAR) with Doppler band width of 1300 Hz, the coherence length loch is:

250 km
500 km
230 km
130 km

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Elements Of Remote Sensing
If θ is the angle of scan measured from the nadir, the ground distance swept by the sensor IFOV is proportional to:

cos²θ
tan²θ
sec²θ
sin²θ

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Elements Of Remote Sensing
Which one of the following relationship between the wave length (λ), and frequency and the speed (C) of the electromagnetic wave is correct?

C = λ/v
C = vλ
C = 1/λv
C = v + λ

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