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qUESTIONS

A student measures the distance traversed in free fall of a body, initially at rest in a given time. He uses this data to estimate g, the acceleration due to gravity. If the maximum percentage errors in measurement of the distance and the time are e₁ and e₂ respectively, the percentage error in the estimation of g is

A physical quantity X is given by X = 2k^3l^2/ m√n . The percentage error in the measurements of k, l, m and n are 1%, 2%, 3% and 4% respectively. The value of X is uncertain by

If the error in the measurement of radius of a sphere is 2%, then the error in the of volume of the sphere will be

The constant of proportionality 1/4πεo in Coulomb’s law has the following units

Pressure gradient has the same dimensionas that of

Pascal-second has a dimension of

Which of the following pairs of physical quantities does not have same dimensional formula:

The physical quantity which has dimensional formula as that of Energy/(Mass x Length) is

The fundamental physical quantities that have same dimensions in the dimensional formulae of torque and angular momentum are

A force F is given by F = at + bt², wheret is time. What are the dimensions of a and b

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