Elements Of Remote Sensing
Formation of snow occurs if the cloud temperature is

Below the freezing point
None of these
Just above the freezing point
At the freezing point

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

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

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Elements Of Remote Sensing
According to the Snell's law if an electromagnetic wave is incident in a medium (refractive index n₁) on another medium (refractive index m₂);

Both (A) and (B)
The angle of incidence is equal to the angle of refraction
Neither (A) nor (B)
The angle of refraction (θr) is given by sin θ₂ = (n₁/n₂) sin θi

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Elements Of Remote Sensing
The part radiation due to scattered/diffused radiation entering the field of view of a remote sensor other than that from the required target,

Increases the contrast of the image but reduces the sharpness
Increases both the contrast and sharpness
Reduces the contrast of the image and also its sharpness
Reduces the contrast but increases the sharpness

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