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$Dear$ $Friends,$ In this blog you will find around 320 solved Geophysics GATE and CSIR-NET and other competitive exams solutions with a better explanation. Please follow and share if you like it. $Thanks,$ $gpsurya$ and $group$
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GATE-2018

GATE 2018 76) A plane electromagnetic (EM) wave traveling vertically downwards with a frequency of 1000Hz in a homogeneous medium has a skin depth of 100m. The ratio of the ampli…
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GATE-2018-78

GATE-2018 78. The apparent resistivities obtained at 0.1 Hz and 10 Hz in the frequency domain I.P. measurement are 100 ohm m and 80 ohm m, respectively. The Percentage Frequency E…
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GATE-2018 (81)

GATE-2018 81. Consider a laterally homogeneous and isotropic earth model with a flat horizontal surface and three horizontal layers underlain by a half-space. A seismic reflection…
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GATE-2006 (63) An EM wave travels vertically downwards in a homogenous medium

63) An EM wave travels vertically downwards in a homogenous medium of 100 m skin depth. At a depth of 200 meters what is the amplitude of the EM wave measured as percent of wave amplitude at the ea…
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GATE 2018

70) The angle of inclination of the remnant magnetization measured on a basalt flow at a location P (28 o N 85 0 E) is 40 o . The palaeomagnetic latitude of the Basalt flow is________________ o…
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GATE -2018 (75)

75 . The P-wave velocity and the Poisson’s ratio for a homogeneous and isotropic sedimentary rock are 2500 m/s and 0.3, respectively. The S-wave velocity for the rock is ________m/s. …
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GATE-2018 (24) :Wyllie – Time average equation

24. Given that the velocity of P-waves in a sandstone matrix is 5600 m/s and that in oil is 1200 m/s, the velocity of P-wave propagation in oil saturated sandstone with 30% porosity is _________…
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GATE-2018 (5)

5) The Geometric factor of the following electrode configuration is       (Thanks to Chandrasekhar, ANU) Solution: The apparent resistivity $\rho_{a}= 2\pi \frac{\triangle V}{I}[(\frac{1}{r_{1}}-\fra…
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GATE 2018

Gate_2018 23) Assume a flat earth with crustal thickness of 35 km and average crustal and mantle P-wave velocities of 6.4 km/sec and 8.1 km/sec respectively. The minimum distanc…
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GATE_2018_77

GATE-2018 77. A student interpreted a four layer Schlumberger resistivity sounding data and obtained the resistivities $(\rho)$ and thicknesses (h) as follows: $\rho_1$=100 ohm m,…
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GATE-2018

71) Using the Gutenberg-Ritcher recurrence relationship, the mean annual rate of exceedance of the earthquake occurrence in a seismic belt is 0.3 per year for an earthquake of magnitude 6.0. The …
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GATE-2018 (7)

7. Pascal second  is the unit of  A) seepage force  B) Dynamic viscosity C) Kinematic viscosity D) Permeability Answer: B Reference:  http://blog.rheosense.com/what-are-the-differ…
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GATE-2018(8)

8.Which one of the following statements is CORRECT?  (A) Strength of a rock decreases with increase in confining pressure.  (B) Strength of a rock increases with increase in temperature.  (…
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GATE-2018 (74)

74. A gravity reading is taken in a stationary helicopter hovering 1 km above mean-sea level at a particular location. The difference in the value of g measured in the helicopter and at m…
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QUIZ-8

2018 GATE Index 2018 GATE Quiz-8    time limit 15 minutes Show all questions <=   => The speed of re…
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