GATE GG-1 year:2021 PYQs & Answers — Page 3

Questions 21–30 of 65. Imported answers require independent review unless marked reviewed.

Topic practice 65 questionsPage 3 of 7

A surface geological process that can create a landform called Cirque is:

Your answerChoose one option.

aeolian deposition

fluvial deposition

glacial erosion

deposition of volcanic ash

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If α and β are P- and S-wave velocities, respectively, then α² − (4/3)β² is equal to: (κ is the bulk modulus, μ is shear modulus and ρ is density)

Your answerChoose one option.

κ/ρ

μ/ρ

κ + μ/ρ

κ - μ/ρ

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Which one of the following phases is P-wave that converts to S-wave during passage through the solid inner core?

Your answerChoose one option.

PKIKP

PKℐKP

PKiKP

PKP₍c₎p

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In reduction of gravity data, the latitude correction is maximum at:

Your answerChoose one option.

35° latitude

45° latitude

55° latitude

65° latitude

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The most coaliferous unit of the Gondwana Supergroup is:

Your answerChoose one option.

Talchir Formation

Barakar Formation

Karharbari Formation

Panchet Formation

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A vertical borehole encounters a shale bed of uniform thickness occurring at a depth of 5 m and dipping 60°. The borehole pierces through this shale bed for a length of 10 m to reach a sandstone layer below. The true thickness of the shale bed is ______ m. [in integer]

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The mass and volume of a fully dried soil sample are 220 gm and 1100 cm³, respectively. If the specific gravity of the soil particles is 2.5 and water density is 1 gm/cm³, the void ratio of the soil is ________. [round off to 2 decimal places]

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A constant-head permeability test was performed on a vertical sand column of height 40 cm and cross-sectional area of 25 cm². During the test, when the loss of head was 50 cm, the volume of water collected in 2 minutes was 300 cm³. Applying Darcy’s law, the calculated coefficient of permeability of the sand column is ______ cm/sec. [round off to 2 decimal places]

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The radius (r) of the oblate spheroid at 45° latitude with ellipticity of polar flattening of 1/298.25 and equatorial radius of 6378140 m is ______ km. [round off to 2 decimal places]

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Light passes through two media with refractive indices of 1.75 and 1.55, respectively. The thickness of both the media is 30 μm. The resultant path difference of the yellow light component (λ = 589 nm) is ______ μm. (Take π = 3.141) [round off to one decimal places]

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GATE GG-1 year:2021 PYQs

Question 11

Question 12

Question 13

Question 14

Question 15

Question 16

Question 17

Question 18

Question 19

Question 20