Units and Measu...

Accuracy of measurement is determined by

The dimension of $$\dfrac{R}{L}$$ are

What is the number of significant figures in $$0.310\times10^3$$

Pressure gradient has the same dimension as that of

Which of the following group have different dimension

The dimensions of shear modulus are

The dimensions of magnetic field intensity in $$ M, L , T $$ and $$ C $$ is given as 

Which of the following is the best estimate for the mass of all the people living on the Earth?

An unknown quantity $$\displaystyle "\alpha"$$ is expressed $$\displaystyle \alpha =\frac{2ma}{\beta }\log \left ( 1+\frac{2\beta \varphi }{ma} \right )$$
where $$m$$ = mass, $$a$$ = acceleration, $$\displaystyle \varphi $$  = length 
The unit of $$\displaystyle \alpha  $$ should be 

The Bernoulli's equation is given by $$\displaystyle p + \frac {1} {2} \rho v^2 + h \rho g = k $$,