GATE Physics: Questions 273  277 of 622
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Question number: 273
» Solid State Physics » Semiconductors and Insulators
Appeared in Year: 2010
Question
The Hall coefficient, of sodium depends on –
Choices
Choice (4)  Response  

a.  The charge carrier density only 

b.  The effective charge carrier mass and carrier density 

c.  The charge carrier density and relaxation time 

d.  The effective charge carrier mass 

Passage
A plane electromagnetic wave has the magnetic field given by,
where, is the wave number and are the Cartesian unit vector in directions, respectively.
Question number: 274 (1 of 2 Based on Passage) Show Passage
» Electromagnetic Theory » Electromagnetic Waves and Their Reflection
Appeared in Year: 2011
Question
The electric field corresponding to the above wave is given by –
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 275 (2 of 2 Based on Passage) Show Passage
» Electromagnetic Theory » Poynting Vector
Appeared in Year: 2011
Question
The average Poynting vector is given by,
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 276
» Mathematical Physics » Elements of Complex Analysis » Singularities
Appeared in Year: 2010
Question
The value of the integral , where the contour is the unit circle is –
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  0 

Question number: 277
» Solid State Physics » Defects in Crystals
Appeared in Year: 2010
Question
The Bloch theorem states that within a crystal, the wavefunction, of an electron has the from –
Choices
Choice (4)  Response  

a.  where , is a lattice vector and is an arbitrary vector 

b.  , where is an arbitrary function and is an arbitrary vector 

c.  where is an arbitrary function and is a reciprocal lattice vector 

d.  where , is a lattice and is a reciprocal lattice vector 
