Measurement MCQs for NEET — Physics Questions with Answers

If NaCl is doped with 10^-4 mol % of SrCl₂, the concentration of cation vacancies will be (N_A = 6.023 x 10²³ mol^-1)                                                                             

CsCl crystallises in body-centred cubic lattice. If 'a' is its edge length then which of the following expressions is correct?

Total volume of atoms present in a face centred cubic unit cell of a metal is ( r is atomic radius):

The mass of a unit cell of CsCl corresponds to:-

A metal wire has mass $(0.4 \pm 0.002)\ \text{g}$, radius $(0.3 \pm 0.001)\ \text{mm}$ and length $(5 \pm 0.02)\ \text{cm}$. The maximum possible percentage error in the measurement of density will nearly be:

The errors in the measurement which arise due to unpredictable fluctuations in temperature and voltage supply are:

In a vernier calipers, $(N + 1)$ divisions of vernier scale coincide with $N$ divisions of main scale. If 1 MSD represents 0.1 mm, the vernier constant (in cm) is:

The quantities which have the same dimensions as those of solid angle are:

A force defined by $F = \alpha t^2 + \beta t$ acts on a particle at a given time $t$. The factor which is dimensionless, if $\alpha$ and $\beta$ are constants, is:

A physical quantity $P$ is related to four observations $a$, $b$, $c$ and $d$ as follows: $P = \dfrac{a^3 b^2}{c\sqrt{d}}$. The percentage errors of measurement in $a$, $b$, $c$ and $d$ are 1%, 3%, 2%, and 4% respectively. The percentage error in the quantity $P$ is: