Class X

For very small values of angles, angular displacement is
  1. Scalar quantity
  2. Vector quantity
  3. Physical quantity
  4. Both a and b
Gravity created by some source is called
  1. Large gravity
  2. Artificial gravity
  3. Gravitational force
  4. Greater gravity
 If 3.5 V is applied to a gate, it will accept it as
  1. High
  2. Low
  3. 1
  4. 0
Geo-stationary satellites are also known as the
  1. Geo-asynchronous satellites
  2. Synchronous satellites
  3. Geo-synchronous satellites
  4. Asynchronous satellites
Color of light emitted by LED depends on
  1. Its forward bias
  2. Its reverse bias
  3. Forward current
  4. Semiconductor material
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