Elements Of Remote Sensing
The remote sensing techniques applied for the earth's surface features, is generally confined to the following wave lengths:

All of these
2.2 to 2.6, 3.0 to 3.6, 4.2 to 5.0 μm
4.2 to 5.0, 7.0 to 15.0 μm and 1 cm to 30 cm
0.4 to 1.3, 1.5 to 1.8, 2.2 to 2.6 μm

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Elements Of Remote Sensing
Which one of the following statement is correct?

The rate of transfer of radiant energy is called flux and is expressed in watts
All of these
The radiant energy which falls upon a surface is termed as irradiance
Radiant energy expressed in Joules, is the energy associated with electromagnetic radiation

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Elements Of Remote Sensing
Which one of the following residual biases involves the GPS accuracy?

Satellite dependent biases due to uncertainty in the orbital parameters of the satellite
Receiver-dependent biases due to clock stability with line
Signal propagation biases due to the sphere and troposphere propagation
All listed here

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