Recent questions tagged units-and-measurement

A planet is at a distance of $8.427 \times 10^8 \;km$ from earth. Its angular diameter $=35.72''$ of an arc. Calculate diameter of planet.

asked Jul 25, 2019 by meena.clay6

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If Area(A) , velocity(V) and density $(\rho)$ are base units , then dimensional formula of force

asked Jul 25, 2019 by meena.clay6

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The percentage error in measuring radius of a sphere is found to be $0.05\%$ calculate the percentage of error is measuring its volume

asked Jul 25, 2019 by meena.clay6

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Magnification of a microscope is 150. A person find the average width of a thread to be 3 mm . what is estimate of thickness of thread

asked Jul 24, 2019 by meena.clay6

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Find density of lead if its relative density = 11.3

asked Jul 24, 2019 by meena.clay6

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convert 1kg $m^2\;s^{-2}$ into = ______$g cm^{-2}S^{-2}$

asked Jul 23, 2019 by meena.clay6

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Find the distance between Quasar (the most distance objects from earth) in km if light takes 3.0 billion year h reach us

asked Jul 23, 2019 by meena.clay6

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Error in measurement of length is found to be $0.2\%$ what is the error in meaning the volume of a cube .

asked Jul 23, 2019 by meena.clay6

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If $\large\frac{dy}{dx}$$=2e \cos (\omega t+ \phi)$ the dimensional formula for $(\omega t +\phi)$ is

asked Jul 23, 2019 by meena.clay6

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Surface tension of a liquids 70 dynes/cm. In MKS system its value is

asked Jul 17, 2019 by meena.clay6

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Dimensions of $\large\frac{1}{2} \in_0 E^2$ where $T_n$ primitively and $E_n$ electric field

asked Jul 17, 2019 by meena.clay6

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Which one represent correct dimension of co efficient of viscosity

asked Jul 16, 2019 by meena.clay6

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The pair having same dimensional formula

asked Jul 16, 2019 by meena.clay6

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If C and L denote capacitance and independent then the dimensions of LC are

asked Jul 16, 2019 by meena.clay6

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If $x=\log_ea$ Maximum possible fractional error in x is

asked Jul 16, 2019 by meena.clay6

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If $T= 2 \pi \sqrt{\large\frac{ML^3}{3Yq}}$ find the dimension of q where T is time period of bar of mass M and length L and Yaingi modulus Y

asked Jul 16, 2019 by meena.clay6

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Volt is equivalent to

asked Jul 2, 2019 by meena.clay6

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If $x=at+bt^2$ where x is distance in km and t is time , then unit of b is

asked Jul 2, 2019 by meena.clay6

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The nearest star to our solar system is 4.29 light years away. How much is this distance in terms of parsecs?

asked Jul 2, 2019 by meena.clay6

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Which is different from others by units

asked Jul 2, 2019 by meena.clay6

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In a certain system of units, 1 unit of time is 5 seconds, 1 unit of mass is 20 kg and 1 unit of length is 10 m. In this system one unit of length is 10m. In this system of power will correspond to

asked Jul 2, 2019 by meena.clay6

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The SI unit of the inductance, the Henry cannot be written as

asked Jul 2, 2019 by meena.clay6

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The error in measuring radius of sphere is $0.2\%$. What is permissible error in it volume

asked Jul 1, 2019 by meena.clay6

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The dimensions of Reynolds's number are

asked Jul 1, 2019 by meena.clay6

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The dimension of electrical resistance is

asked Jun 26, 2019 by meena.clay6

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The time period (T) depends upon the density 'd' radius 'r' and surface tension S obtain the formats for T by dimensional method

asked Jun 26, 2019 by meena.clay6

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Convert 1 newton into dynes

asked Jun 25, 2019 by meena.clay6

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The percentage errors in measurement of mass and speed are $2 \%$ and $3\%$. The error in K.E obtained is

asked Jun 25, 2019 by meena.clay6

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Unit of modulus of rigidity are

asked Jun 25, 2019 by meena.clay6

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In a vernier callipers one main scale division is x cm and n division of vernier scale coincides with $(n-1) $ divisions of main scale least in cm is

asked Jun 25, 2019 by meena.clay6

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If force acceleration and time are taken as fundamental quantities , then dimension of length will be

asked Jun 25, 2019 by meena.clay6

1 answer