1. REMOTE SENSING INTERVIEW QUESTIONS
Source & Courtesy:

2. Phytoplanktons:
are microscopic plants
are the first link in all the aquatic and marine food chains
convert solar energy, dissolved carbon and nitrogen into organic biomass
All of these
Answer: Option D

3. 27. 
The maximum absorption of solar radiation due to ozone occurs at wave lengths: A.
shorter than 0.3 μm B.
shorter than 0.2 μm C.
greater than 0.3 μm D.
None of these
Answer: Option A

4. Which one of the following statements is correct to remote sensing?
The basic property used to identify objects, is called signature.
The ratio of the reflected flux to incident flux is called reflectance which varies fron 0 to 1
The surface from which emergent radiance is constant in all directions is called Lambertian surface. C.
D. All of these.
Answer: Option D

5. Which one of the following frequencies is a GPS?
L1 with frequency 1520 MHz
L1 with frequency MHz
L1 with frequency MHz
L1 with frequency Hz
Answer: Option B

6. Snow cover on the earth surface:
gives the highest reflectance in the visible spectrum
shows marked variation in its reflectance characteristics
Shows side variation in the grain size
All the above
Answer: Option D

7. Electromagnetic waves are characterised by:
frequency
wave length
intensity
direction of travel and plane of polarisation.
All of these
Answer: Option E

8. Answer: Option C The solid angle subtended by the sphere is: A. 2π B.3π C. 4π D. 6π
Answer: Option C

9. For accurate position fix, the three satellites:
must be along a common arc
must be in vertical line above the receiver
must be widely separated and well distributed
must be such that one satellite is overhead of the receiver and other two widely separated
Answer: Option C

10. Pick up the correct statement from the following:
Water molecules and salt-ions in the ocean scatter the lower wave length more
An increase in the back scattering coefficient with shorter wave length gives a deep blue colour for clear oceanic water B.
The ratio of the upwelling irradiance just below the surface and down welling irradiance just above the surface is called reflectance ratio. C.
D. All of these
Answer: Option D

11. Pick up the correct statement from the following:
The wave length of gamma rays is m
The wave length of radio rays is 106 m
The visible length occupies a small portion of the electromagnetic spectrum extending roughly from 0.4 μ m to 0.7μm wave length. C.
D. All of these
Answer: Option D

12. The various stages of formation of snow are listed below:
Formation of ice crystals
Formation of snow pallets
Formation of snow flakes
Formation of snow crystals
Formation of rimed crystals
Which one of the following sequences is correct? A. B. C. D.
Answer: Option C

13. Snow consists of
snow crystals
rimed snow crystals
snow flakes
All of these
Answer: Option D

14. For perfect coherent radiation, which one of the following statement is correct?
Both the waves must have single frequencies
The directions of motion of both waves are parallel.
The waves must be collimated
All of these
Answer: Option D

15. Fresh and pure snow reflectance
is very high in visible region
falls off steeply in the near-IR region
remains low for longer wave lengths
All of these
Answer: Option D

16. Snow albedo is affected by:
wave length
grain size
solar zenith angle
snow pack thickness
All of these
Answer: Option E

17. Thanks…

18. The emission of electrons from a metal plate exposed to light depends on the:
intensity of the light
frequency of light
both (a) and (b)
neither (a) nor (b)

19. The range measurements in GPS are made with:
3 L - band frequencies
2 L - band frequencies
2 C - band frequencies
3 C - band frequencies

20. 'A time varying magnetic field produces an electric field'
'A time varying magnetic field produces an electric field'. This phenomenon is known as
Newton's law
Kirchoff law
Ampere Maxwell law
Faraday's law

21. For obtaining accurate distance of the satellite
the GPS receiver slides its codes backwards until it synchronises with the satellite signals
the signal arrival time is corrected for tropospheric and ionospheric delays
the carrier phase measurement technique is adopted
All of these
GPS has been widely recognized as accurate, fast and cost-effective method for the following:
Collection of the geographic coordinate data used in GIS
for movement of navigation
For determination of precise orbit and altitude of low earth orbiting satellites
All of these