Class XII

Vector has
  1. magnitude
  2. magnitude as well as direction
  3. direction
  4. None of these
Zero Vector
  1. A vector whose initial and terminal points coincide
  2. A vector whose initial and final points are different
  3. A vector whose terminal points are at origin
  4. A vector whose initial points are at origin
Unit Vector is
  1. A vector whose direction angle α is unity
  2. A vector whose direction angle γ is unity
  3. A vector whose direction angle β is unity
  4. A vector whose magnitude is unity
Direction cosines
  1. are cosines of Direction angles
  2. are cotangents of Direction angles
  3. are tangents of Direction angles
  4. are sines of Direction angles
Vectors A and B are equal
  1. if they have the same magnitude
  2. if they have the same magnitude and direction
  3. if they have the same magnitude and opposite direction
  4. if they have the same direction
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