Geology and Geophysics
GATE GG-1 kind:question PYQs
Build your understanding with focused practice from past exam papers.
Questions 421–430 of 650. Imported answers require independent review unless marked reviewed.
Question 21
Open questionCNAT1 markNeeds review
A Mid-Oceanic-Ridge has symmetric magnetic anomalies about the ridge axis as shown below. Using the information given in the figure, the average relative velocity between the Plates A and B is calculated to be ______ cm/year.
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The transmission coefficient for the vertically incident seismic wave at the interface between Layer 1 and Layer 2 given in the figure is ______. (Round off to 2 decimal places)
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The ‘geometrical factor’ for the electrode configuration given below will be ______ m. (Round off to 2 decimal places) (Use
)(
and
are current electrodes;
and
are potential electrodes)
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In an electromagnetic measurement, the resultant field shows a phase lag of 30° with respect to the primary field at the receiver coil. The ratio of Inphase to Quadrature component of the resultant field is ______. (Round off to 2 decimal places)
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A 4 km-high plateau is isostatically compensated as shown in the figure. Assuming Pratt’s hypothesis of isostasy, the calculated density of the plateau is ______ kg/m³.
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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 1
Open questionGL-1MCQ2 marksNeeds review
“Point Group” in crystallography is characterized by a set of symmetry operations such that
Your answerChoose one option.
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What are the Miller indices of a plane that intercepts each of the crystallographic axes X, Y and Z, at 20 Å? (Assume a primitive unit-cell with the dimensions
Å,
Å and
Å.)Your answerChoose one option.
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Which one of the following processes is associated with the emission of X-rays?
Your answerChoose one option.
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Which one of the following radioisotopes has the longest half-life?
Your answerChoose one option.
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The given geological map presents
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