A student measuring the diameter of a pencil of circular cross-section with the help of a vernier scale records the following four readings $5.50\, mm , 5.55\, mm ,$$ 5.45\, mm ; 5.65\, mm .$ The average of these four readings is $5.5375\, mm$ and the standard deviation of the data is $0.07395\, mm .$ The average diameter of the pencil should therefore be recorded as
JEE MAIN 2020, Medium
Download our appand get started for free
Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*
Similar Questions
- 1In an experiment on simple pendulum to determine the acceleration due to gravity, a student measures the length of the thread as $63.2 \,cm$ and diameter of the pendulum bob as $2.256 \,cm$. The student should take the length of the pendulum to be ........... $cm$View Solution
- 2Dimensions of $CR$ are those ofView Solution
- 3A student measured the length of a rod and wrote it as $3.50\;cm$. Which instrument did he use to measure it?View Solution
- 4View SolutionThe fundamental physical quantities that have same dimensions in the dimensional formulae of torque and angular momentum are
- 5View SolutionWhich is the correct unit for measuring nuclear radii
- 6The time dependence of a physical quantity $P$ is given by $ P = P_0 exp^{(-\alpha t^{2})} $ where $\alpha$ is a constant and $t$ is time. The constant $\alpha$View Solution
- 7One atomic mass units is equivalent to .............. $MeV$ energy.View Solution
- 8If momentum $(P)$, area $(A)$ and time $(T)$ are taken to be fundamental quantities then energy has dimensional formulaView Solution
- 9Electric field in a certain region is given by $\overrightarrow{ E }=\left(\frac{ A }{ x ^2} \hat{ i }+\frac{ B }{ y ^3} \hat{ j }\right)$. The $SI$ unit of $A$ and $B$ areView Solution
- 10The number of significant figures in the measured value $4.700 \,m$ is the same as that in the value ....... $m$View Solution