Units & Measurement — Physics PYQ (AP EAPCET)

The speed of ripples \((v)\) on water surface depends on surface tension \((\sigma)\), density \((\rho)\) and wavelength \((\lambda)\). Then, the square of speed \((v)\) is proportional to

Which year was declared as the International year of Physics?

One angstrom \((\mathop A\limits^o )\) is equal to

The dimensions of stress is

In SI units, \(\mathrm{kg}-\mathrm{m}^2 \mathrm{~s}^{-2}\) is equivalent to which of the following?

If \(N_A, N_B\) and \(N_C\) are the number of significant figures in \(A=0.001204 \mathrm{~m}, B=43120000 \mathrm{~m}\) and \(C=1.200 \mathrm{~m}\) respectively, then

The energy of \(E\) of a system is function of time \(t\) and is given by \(E(t)=\alpha t-\beta t^3\), where \(\alpha\) and \(\beta\) are constants. The dimensions of \(\alpha\) and \(\beta\) are

In the equation $\left(p+\frac{a}{V^2}\right)(V-b)=R T$, where $p$ is pressure, $V$ is volume, $T$ is temperature, $R$ is universal gas constant, $a$ and $b$ are constants. The dimensions of $a$ are

Among the following, the physical quantity having the dimensions of Young's modulus is

If the maximum and minimum temperatures at a place on a day are measured as $44^{\circ} \mathrm{C} \pm 0.5^{\circ} \mathrm{C}$ and $22^{\circ} \mathrm{C} \pm 0.5^{\circ} \mathrm{C}$ respectively, then the temperature difference is

The number of significant figures in the simplification of $\frac{0.501}{0.05}(0.312-0.03)$ is

The dimensional formula of Planck's constant is

If the equation for the velocity of a particle at time ' $t$ ' is $v=$ at $+\frac{b}{t+c}$, then the dimensions of $a, b, c$ are respectively

Of the following, the pair of physical quantities not having the same dimensional formula is

If the error in the measurement of the surface area of a sphere is $1.2 \%$, then the error in the determination of the volume of the sphere is