### Class XI

The units of pressure are the same as the units of
1. stress
2. plasticity
3. strain
4. elasticity
The significant figures of a number
1. are all non zero digits
2. are those that are at odd positions after decimal
3. are those that are at even positions after decimal
4. are those digits that carry meaning contributing to its accuracy
When two quantities are multiplied or divided, the relative error in the result is
1. the difference of the absolute errors in the multipliers
2. the sum of the absolute errors in the multipliers
3. the difference of the relative errors in the multipliers
4. the sum of the relative errors in the multipliers
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
The relative error in a physical quantity raised to the power k is.
1. (k – 1) times the absolute error in the individual quantity
2. (k – 1) times the relative error in the individual quantity
3. k times the absolute error in the individual quantity
4. k times the relative error in the individual quantity
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