Telegram group: T.me/BBCNOUN
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PHY461
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1. In vector calculus, Stoke’s theorem relates

	      line-integral to volume integral

	      surface integral to volume integral

	      scalar product integral to norm

	--->> line integral to surface integral

2. Arrange the following electrode configurations in the ascending order of their depth of investigationnn(P) Dipole-Dipolen(Q) Schlumbergern(R) Wennern(S) Pole-Polen

	      R – S – Q – P

	      P – Q – S – R

	--->> R – Q – P – S

	      R – Q – S – P

3. The heat flow through a unit area of the Earth’s surface is given by the product of

	--->> vertical thermal gradient and thermal conductivity   B horizontal thermal gradient and thermal conductivity

	      horizontal thermal gradient and thermal conductivity

	      vertical thermal gradient and thermal diffusivity

	      horizontal thermal gradient and thermal diffusivity

4. The Fourier transform and integral of the Dirac delta function respectively are

	--->> 1 and 1

	      zero and zero

	      zero and 1

	      1 and infinity

5. Which one of the following geophysical methods is most suitable for exploration of possiblenhydrocarbon-bearing sediments underlying the Deccan Traps?n

	      Seismic

	--->> Magnetotellurics

	      DC resistivity

	      Airborne EM

6. The radial dependence of the solution of the Laplace equation in cylindrical coordinates isnexpressed in terms ofn

	--->> bessel function

	      Legendre polynomial

	      Exponential function

	      Hermite polynomial

7. Which one of the following transforms relates the real and imaginary components of harmonic electromagnetic (EM) field?

	      Fourier transform

	      Laplace transform

	--->> Hilbert transform

	      Wavelet transform

8. For an electrostatic field, the Maxwell’s equations reduce to

	      Wavw equation

	      diffusion equation

	      helmholts equation

	--->> Poisson equation

9. Which one of the following functions is used as a source-term to obtain the Green’s function of a  boundary value problem?

	      Heaviside unit step function

	      Exponential function

	      Rectangular function

	--->> Dirac delta function

10. In general, geophysical inverse problems dealing with real data obtained from field measurements   are

	--->> line-integral to volume integral

	      surface integral to volume integral

	      vertical thermal gradient and thermal diffusivity

	      horizontal thermal gradient and thermal diffusivity