BHU PET 2015 M.Sc (Tech) Geophysics Question Paper with Answer Key PDFs

BHU PET Questions

• 1.

  The radius of the first zone in a zone plate of focal length 40 cm for light of wavelength 4000 Å is:
  

  • 0.4 cm
    
  • 0.04 cm
    
  • 0.16 cm
    
  • 0.010 cm
    
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• 2.

  Which of the following is an optically active substance?
  

  • Calcite
    
  • Tourmaline
    
  • Quartz
    
  • Sodium Chloride
    
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• 3.

  During a quasi-static process:
  

  • The system is not in thermodynamic equilibrium
    
  • The system is at all times infinitesimally near a state of thermodynamic equilibrium
    
  • The system is far away from a state of thermodynamic equilibrium
    
  • None of the three
    
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• 4.

  If a black body radiation enclosure expands, so that its volume becomes 64 times, the temperature of the enclosure becomes:
  

  • One fourth
    
  • Four times
    
  • 16 times
    
  • 8 times
    
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• 5.

  Specific heat of saturated steam is:

  • Positive
    
  • Negative
    
  • Zero
    
  • 1 cal/gm-degree
    
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• 6.

  Mathematical formulation of the first law contains the idea of:
  

  • The existence of an internal energy function
    
  • The principle of the conservation of energy
    
  • The definition of heat as energy in transit by virtue of a temperature difference
    
  • All of the three
    
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