### Class XI

If an equation is dimensionally consistent
1. dimensions of the left hand side and right hand side of the equation are the same
2. dimensions of the left hand side and right hand side of the equation differ by 1
3. dimensions of the left hand side and right hand side of the equation are different
4. dimensions of the left hand side and right hand side of the equation differ by 2
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
Electric charge is expressed in SI units as
1. derived unit
2. Real unit
3. complex unit
4. a base unit
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
The units of pressure are the same as the units of
1. stress
2. plasticity
3. strain
4. elasticity
0
0

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