GATE 2017-2018 :: GATE Physics
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Consider the scattering of neutrons by protons at very low energy due to a nuclear potential of range r0. Given that, cot(kr0 + δ) ≈ -ϒ/kwhere δ is the phase shift, k the wave number and (-ϒ)the logarithmic derivative of the deuteron ground state wave function, the phase shift is
- In the β decay process, the transition 2+ → 3+, is
- At a surface current, which one of the magneto static boundary condition is NOT CORRECT?
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Interference fringes are seen at an observation plane z = 0, by the superposition of two plane waves
, where A1 and A2 are real amplitudes. The condition for interference maximum is - For a scalar function φ satisfying the Laplace equation, ∇φ has
- A circularly polarized monochromatic plane wave is incident on a dielectric interface at Brewster angle. Which one of the following statements is CORRECT ?
- Which one of the following commutation relations is NOT CORRECT ? Here, symbols have their usual meanings.
- What should be the clock frequency of a 6-bit A/D converter so that its maximum conversion time is 32 μs?
- A phosphorous doped silicon semiconductor ( doping density: 1017/cm3) is heated from 100oC to 200oC. Which one of the following statements is CORRECT ?
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Considering the BCS theory of superconductors, which one of the following statements is NOT CORRECT? (h is the Planck's constant and e is the electronic charge)
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A.
The reflected light is plane polarized in the plane of incidence and the transmitted light is circularly polarized.
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B.
The reflected light is plane polarized perpendicular to the plane of incidence and the transmitted light is plane polarized in the plane of incidence.
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C.
The reflected light is plane polarized perpendicular to the plane of incidence and the transmitted light is elliptically polarized.
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D.
There will be no reflected light and the transmitted light is circularly polarized.
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