The ratio of the total solar radiant energy returned by a planetary body to the

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Question
The ratio of the total solar radiant energy returned by a planetary body to the total radiant energy incident on the body, the called:
Options
A. reflectance
B. reflectance factor
C. albedo
D. none of these

Correct Answer

albedo

Elements of Remote Sensing problems

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1. Consider the following statements regarding the satellite imaging :
1. The satellite orbit is fixed in the inertial space
2. During successive across-track imaging, the earth rotates beneath the sensor
3. The satellite images a skewed area
Which one of the following statements is/are correct?
Options
A. 1, 2, 3
B. 1, 3
C. 2, 3
D. 1, 2

4. Pick up the correct statement from the following:
Options
A. The refractive index of a medium varies according to the wavelength of the radiation,
B. The variation of the refractive index with wave length, is called dispersion,
C. The splitting of colours of white light by passing through a prism, is caused due to dispersion.
D. All the these

5. Pick up the correct statement from the following :
Options
A. The minimum frequency of light for which no electrons are emitted, is called threshold frequency.
B. Polarising angle of glass is 57�.5
C. At the polarising angle, the reflected and refracted rays are orthogonal
D. All the above

8. Electromagnetic spectrum contains :
Options
A. gamma rays (wave length < 10^-10 m)
B. ultraviolet rays (wave length < 10^-6 m)
C. infrared rays (wave length < 10^-4 m)
D. radio rays (wave length > 1 m)
E. All of these

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