The mass of a ball is $1.76 kg$. The mass of 25 such balls is

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ANAND_YADAV Asked Jul 29, 2023

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ANAND_YADAV Asked Jul 29, 2023

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An experiment measures quantities $x, y, z$ and then $t$ is calculated from the data as $t=\frac{x y^{2}}{z^{3}}$. If percentage errors in $x , y$ and $z$ are respectively $1 \%, 3 \%, 2 \%$, then percentage error in $t$ is :

ANAND_YADAV Asked Jul 29, 2023

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ANAND_YADAV Asked Jul 29, 2023

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The external and internal diameters of a hollow cylinder are measured to be $(4.23 \pm 0.01) cm$ and $(3.89 \pm 0.01) cm$. The thickness of the wall of the cylinder is

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The edge of a cube is $a=1.2 \times 10^{-2} m$. Then its volume will be recorded as :

ANAND_YADAV Asked Jul 29, 2023

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The length of a rectangular plate is measured by a meter scale and is found to be $10.0 cm$. Its width is measured by vernier callipers as $1.00 cm$.

ANAND_YADAV Asked Jul 29, 2023

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If x= (a-b), the maximum percentage error in the measurement of x will be —

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ANAND_YADAV Asked Jul 29, 2023

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To estimate ' $g$ ' (from $g=4 \pi^{2} \frac{L}{T^{2}}$ ), error in measurement of $L$ is $\pm 2 \%$ and error in measurement of $T$ is $\pm 3 \%$. The error in estimated ' $g$ ' will be -

ANAND_YADAV Asked Jul 29, 2023

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ANAND_YADAV Asked Jul 30, 2023

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A student performs an experiment for determination of $g\left(=\frac{4 \pi^{2} \ell}{ T ^{2}}\right), \ell \approx 1 m$, and he commits an error of $\Delta \ell$.

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ANAND_YADAV Asked Jul 30, 2023

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ANAND_YADAV Asked Jul 29, 2023

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ANAND_YADAV Asked Jul 29, 2023

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A ball is dropped on a floor from a height of 5 meter. It rebounds to a height of $3.2$ metre. If the ball as in contact with the floor for $0.1 sec$.,

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A small ball is dropped from a height 100m on a floor. The ball rebounds to a height of 20 meter.

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ANAND_YADAV Asked Jul 30, 2023

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61.25% (w/w) H2SO4 stock solution has a density of $1.6 g mL ^{-1}$. The molecular weight of H2SO4 is $98 g mol ^{-1}$. The volume $( mL )$ of stock solution required to prepare a 200 mL solution of 0.3 M H2SO4 is :

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A body of mass M is resting on a rough horizontal plane surface, the coefficient of friction being equal to $\mu .$ At $t=0$

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Distance of the centre of mass of a solid uniform cone from its vertex is z_0

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A resistance of $50 \Omega$ is registered when two electrodes are suspended into a beaker containing a dilute solution of a strong electrolyte such that exactly half of the them are submerged into solution.

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The coagulation of 10 mL of a colloidal sol of gold is completely prevented by addition of 0.25 g of a substance X to it before adding 1 mL of 10% NaCl solution. The gold number of X is

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The mass of a ball is $1.76 kg$. The mass of 25 such balls is

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