Civil Engineering - Elements of Remote Sensing

Exercise :: Elements of Remote Sensing - Section 3

31. 

The emission of electrons from a metal plate exposed to light depends on the :

A. intensity of the light
B. frequency of light
C. both (a) and (b)
D. neither (a) nor (b)

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

32. 

The range measurements in GPS are made with :

A. 3 L - band frequencies
B. 2 L - band frequencies
C. 2 C - band frequencies
D. 3 C - band frequencies

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

33. 

'A time varying magnetic field produces an electric field'. This phenomenon is known as

A. Newton's law
B. Kirchofflaw
C. Ampere Maxwell law
D. Faraday's law

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

34. 

For obtaining accurate distance of the satellite

A. the GPS receiver slides its codes backwards until it synchronises with the satellite signals
B. the signal arrival time is corrected for tropospheric and ionospheric delays
C. the carrier phase measurement technique is adopted
D. All of these

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

35. 

GPS has been widely recognized as accurate, fast and cost-effective method for the following:

A. Collection of the geographic coordinate data used in GIS
B. for movement of navigation
C. For determination of precise orbit and altitude of low earth orbiting satellites
D. All of these

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.