For the given statements If Δa and Δb be the mean absolute errors in a and b, then the…
Physics · NEET · NTA Exams — Physics and Measurement
For the given statements
- If Δa and Δb be the mean absolute errors in a and b, then the mean absolute error in the quantity, \(c=a \pm b\) will be
\(\Delta c=\Delta a \pm \Delta b\)
- If N divisions of the main scale of vernier calipers coincide with \((\mathrm{N}+1)\) divisions on the vernier scale and each division on the main scale is of 'a' units, then least count of the instrument will be \(\frac{a N}{(N+1)}\).
- If N vernier divisions are equal to the \((\mathrm{N}-1)\) main scale divisions and each division on the main scale is of 'a' units then vernier constant, \(C=\frac{a}{N}\)
Find the incorrect statements.
- p, r
- p, q, r
- q, r
- p, q
Answer
(A) p, r
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