91. A material having different properties in different directions is known as:

1. 1. isotropic

   
   
   

   2. anisotropic

   
   
   

   3. crystalline

   
   
   

   4. metal

   
   
   

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1. View Hint View Answer Discuss in Forum

   A material having different properties in different directions is known as anisotropic.

   Correct Option: B

   A material having different properties in different directions is known as anisotropic.

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92. A crystalline solid has all similar atoms relative to neighbouring atoms in:

1. 1. periodical positions

   
   
   

   2. reversed positions

   
   
   

   3. random fluctuating position

   
   
   

   4. similar positions

   
   
   

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1. View Hint View Answer Discuss in Forum

   A crystalline solid has all similar atoms relative to neighbouring atoms in similar positions.

   Correct Option: D

   A crystalline solid has all similar atoms relative to neighbouring atoms in similar positions.

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93. The Miller indices of a plane are proportional to:

1. 1. the reciprocal of numerical parameters of the intercepts

   
   
   

   2. the square of unit cell dimensions

   
   
   

   3. the intercepts of the planes on the coordinate axes

   
   
   

   4. interplanar spacing

   
   
   

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1. View Hint View Answer Discuss in Forum

   The Miller indices of a plane are proportional to the reciprocal of numerical parameters of the intercepts.

   Correct Option: A

   The Miller indices of a plane are proportional to the reciprocal of numerical parameters of the intercepts.

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94. If Coulomb’s attractive force is of	A
    	r2

    form in a material system, its potential energy will be given by:

1. 1. A

      r

   
   
   

   2. - A

      r

   
   
   

   3. A

      r3

   
   
   

   4. - A

      r3

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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95. The [110] direction in a cubic unit cell is parallel to:

1. 1. face diagonal of unit cell

   
   
   

   2. edge of the cube

   
   
   

   3. body diagonal of the cube

   
   
   

   4. none of the above

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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