Which method can detect voids or sinkholes beneath roads?
A. Gravity survey
B. Magnetic survey
C. Seismic reflection
D. Resistivity imaging
Answer: Option D
Solution (By Examveda Team)
Resistivity imaging can detect anomalies caused by voids, cavities, or sinkholes as these areas contrast with surrounding material in resistivity.This Question Belongs to Geological Engineering >> Geophysical Methods In Engineering
Which geophysical method uses electrical resistivity to study subsurface layers?
A. Seismic reflection
B. Electrical resistivity method
C. Gravity method
D. Magnetic method
What is the primary physical property measured in the seismic refraction method?
A. Electrical resistivity
B. Density
C. Seismic wave velocity
D. Magnetic susceptibility
The magnetic method in geophysics is used to detect:
A. Density contrasts
B. Magnetic anomalies
C. Water table depth
D. Pore pressure
Ground Penetrating Radar (GPR) is most effective in detecting:
A. Subsurface water
B. Magnetic minerals
C. Airborne pollutants
D. Earthquakes
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