Q.
Measure of two quantities along with the precision of respective measuring instrument is :A=2.5m/s±0.5m/sB=0.10s±0.01sThe value of AB will be :
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a
(0.25±0.08)m
b
(0.25±0.5)m
c
(0.25±0.05)m
d
(0.25±0.135)m
answer is A.
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Detailed Solution
Let y = ABΔyy=ΔAA+ΔBBy=2.5×0.1=0.25Δy0.25=0.52.5+0.010.10⇒Δy=0.075=0.08(2SF)
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