List of top Physics Questions on Units, Dimensions and Measurements asked in AP EAPCET

Match the physical quantities in List I with the corresponding SI units in List II:

If \(A\), \(B\) and \(C\) represent work done, distance and electric charge respectively, then the physical quantity having the dimensions of \[ \frac{C^2}{AB} \] is

If \(Q\), \(L\) and \(T\) represent the electric charge, inductance and time respectively, then the physical quantity having the dimensions of \( \dfrac{QL}{T^2} \) is:

Match the following physical quantities with their dimensional formulae: \[ \begin{array}{ll} \text{A) Gravitational potential} & \text{I) } LT^{-2} \\ \text{B) Gravitational potential energy} & \text{II) } L^{2}T^{-2} \\ \text{C) Gravitational constant} & \text{III) } ML^{2}T^{-2} \\ \text{D) Gravitational intensity} & \text{IV) } M^{-1}L^{3}T^{-2} \end{array} \] The correct match is:

From the point of view of significant figures, which of the following is/are correct? (i) $1.3~cm + 4~cm = 15.3~cm$ (ii) $4.53~m - 1.2~m = 3.3~m$ (iii) $5.45~kg - 3.2~kg = 2.25~kg$ (iv) $4.8~cm + 48.6~cm = 133~cm$

$\beta=\frac{F}{v^{2}}\cos(\alpha t)$, if $F$ is force, $v$ is velocity, $t$ is time, then the dimensional formulae of $\alpha$, $\beta$ are respectively

If the dimensional formula of a physical quantity is $[M^1 L^2 T^{-2}]$, then the quantity is:

Consider the following:
a) 0.0025
b) 500.0
c) 2.0034
Number of significant figures in A, B and C respectively are

A speed of \(54\ \text{km/h}\) is equal to:

Which of the following physical quantities has the same dimensions as surface tension?

The dimensional formula of emissivity of a body is:

The dimensional formula \[ [ML^2T^{-2}K^{-1}] \] corresponds to which physical quantity?

A physical quantity \(P\) is related to four observables \(a\), \(b\), \(c\), and \(d\) as \[ P=\frac{\sqrt{ab}\cdot d^{\alpha}}{\sqrt{c}} \] (\(\alpha\) is a constant). The percentage errors in \(a\), \(b\), \(c\), and \(d\) are \(0.5\%\) each. If the percentage error in \(P\) is \(2\%\), then \(\alpha\) is

The number of significant figures in quantity \(0.00005041\ \text{J}\) is

The expressions below give current \(I\) through an electronic component as a function of applied potential \(V\). \(I_0\) and \(V_0\) are constants having dimensions of current and potential respectively. Which of the following are dimensionally incorrect?

If the dimensional formula of \[ (\text{Energy} \times \text{speed}) \] is \[ [M^aL^bT^c], \] then \(a,b,c\) are: