Condensed Matter Physics

JKPSC Assistant Professor (Physics) · Physics · 63 practice questions with answers and explanations: 6 Easy, 57 Medium, 0 Hard.

Sample questions

Sample Easy question 1

Ferromagnetic materials lose their magnetism above the:

  1. Debye temperature
  2. Boiling point
  3. Fermi temperature
  4. Curie temperature
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Answer: D. They become paramagnetic.

Sample Easy question 2

The Debye model describes the:

  1. Hall effect
  2. Optical conductivity
  3. Magnetic moment
  4. Specific heat of solids
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Answer: D. It treats lattice vibrations as phonons.

Sample Easy question 3

In a p-type semiconductor the majority carriers are:

  1. Neutrons
  2. Electrons
  3. Holes
  4. Protons
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Answer: C. They arise from acceptor doping.

Sample Medium question 4

A Cooper pair consists of two electrons with:

  1. Opposite momentum and spin
  2. The same momentum
  3. The same spin
  4. Zero charge
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Answer: A. They are bound through phonons.

Sample Medium question 5

A type-I superconductor has:

  1. Mixed state
  2. One critical field
  3. Two critical fields
  4. No critical field
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Answer: B. It shows a complete Meissner effect.

Sample Medium question 6

Type-II superconductors have a mixed state between:

  1. Zero and Hc1
  2. Zero and zero
  3. Hc1 and Hc2
  4. Above Hc2
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Answer: C. Vortices form.

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