Geology and Geophysics
GATE GG-1 topic:basic-principles-remote-sensing PYQs
Build your understanding with focused practice from past exam papers.
Questions 11–20 of 20. Imported answers require independent review unless marked reviewed.
Question 63
Open questionGGNAT2 marksNeeds review
A digital camera with a focal length of 150 mm is flown at a height of 3000 m over a flat terrain for taking aerial photographs. The scale of the aerial photograph is 1: _______. [in integer]
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Open questionGG - G1MCQ1 markNeeds review
The dimension of radiant emittance of a blackbody as per Stefan-Boltzmann law is:
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Open questionGL-1MCQ2 marksNeeds review
The CORRECT sequence of the given electromagnetic radiations in order of increasing wavelength is
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 49
Open questionPART-B SECTION-1MCQ2 marksNeeds review
The figure given below represents a scatter plot of Digital Numbers (DN) of Band 4 and Band 5 of a satellite imagery. The fields of Class A and Class B are denoted by the rectangular boxes along with their class means (open circles). Class assignment for the point P by Minimum Distance to Mean (MDM) and Nearest Neighbor (NN) algorithms are ________.
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Open questionPART-B GEOLOGY (SECTION 1)MCQ2 marksNeeds review
Which one of the following is an image rectification technique?
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Open questionPART-B GEOLOGY (SECTION 1)NAT2 marksNeeds review
A sun synchronous satellite is at an altitude of 300 km and the spectrometer makes an angular coverage angle of 12°. The Swath (FOV) of the satellite is ____________ km.
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Open questionGG-CMCQ1 markNeeds review
Universal Transverse Mercator (UTM) is a type of
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Open questionGG-CMCQ1 markNeeds review
Brightness temperature is a function of surface temperature and
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Open questionGG-1NAT2 marksNeeds review
In a vertical aerial photo, the top and bottom of a tower built on a flat terrain is displaced by 2 mm. In the photograph, the distance between top of the tower and nadir point is 100 mm. The flying height of the aircraft was 300 m above the ground. The estimated height of the tower is __________ m.
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Open questionGG-1NAT2 marksNeeds review
The minimum and maximum values of the digital number (DN) of a remote sensing image are 8 and 32 respectively. The digital data was linearly stretched between 0 and 255 by using min-max linear stretching method. The post stretched integer DN value of a pixel with an original DN value of 27 will be __________.
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