Elements Of Remote Sensing
Coherence of two electromagnetic waves takes place if their phase difference is:

Constant in space
Constant in time and space
Constant in time
None of these

ANSWER DOWNLOAD EXAMIANS APP

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

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

ANSWER DOWNLOAD EXAMIANS APP