WB JEE
Physics
Units & Measurements
Previous Years Questions

MCQ (Single Correct Answer)

The velocity of a particle (v) at an instant t is given by $$v = at + b{t^2}$$ the dimension of b is
In an experiment, the length of an object is measured to be 6.50 cm. This measured value can be written as 0.0650 m. The number of significant figures...
A modified gravitational potential is given by $$\mathrm{V}=-\frac{\mathrm{GM}}{\mathrm{r}}+\frac{\mathrm{A}}{\mathrm{r}^{2}}$$. If the constant A is ...
Given : The percentage error in the measurements of A, B, C and D are respectively, 4%, 2%, 3% and 1%. The relative error in $$Z = {{{A^4}{B^{{1 \over...
The Entropy (S) of a black hole can be written as $$S = \beta {k_B}A$$, where kB is the Boltzmann constant and A is the area of the black hole. The $$...
From dimensional analysis, the Rydberg constant can be expressed in terms of electric charge (e), mass (m) and Planck constant (h) as [consider $${1 \...
The frequency v of the radiation emitted by an atom when an electron jumps from one orbit to another is given by v = k$$\delta $$E, where k is a const...
The correct dimensional formula for impulse is given by
The density of the material of a cube can be estimated by measuring its mass and the length of one of its sides. If the maximum error in the measureme...
A spherical liquid drop is placed on a horizontal plane. A small distance causes the volume of the drop to oscillate. The time period of oscillation (...
The dimension of the universal constant of gravitation, G is

Subjective

Write down the relation between tesla and gauss.
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