Class XI

Electric charge is expressed in SI units as
  1. derived unit
  2. Real unit
  3. complex unit
  4. a base unit
How many meters does a vehicle moving with a speed of 18 km h−1h−1 covers in 1 s
  1. 4.5
  2. 5.0
  3. 4
  4. 6
A dimensionally consistent equation
  1. is necessarily correct
  2. is not necessarily correct
  3. is always correct
  4. is nearly correct
The surface area of a solid cylinder of radius 2.0 cm and height 10.0 cm in mm2mm2 is equal to
  1. 150
  2. 1.5×104
  3. 15
  4. 1500
When two quantities are added or subtracted, the absolute error in the final result is
  1. absolute value of the sum of errors of individual quantities
  2. absolute value of the sum of individual quantities
  3. the sum of the absolute errors in the individual quantities
  4. absolute value of the difference of errors of individual quantities
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