Test: Units & Measurements (April 4) - JEE MCQ
15 Questions MCQ Test - Test: Units & Measurements (April 4)
In a vernier calliper, each cm on the main scale is divided into 20 equal parts. If tenth vernier scale division coincides with tenth main scale division, then the value of vernier constant will be .............. x 10-2 mm. (in integers)
If momentum [P], area [A] and time [T] are taken as fundamental quantities, then the dimensional formula for coefficient of viscosity is:
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Identify the pair of physical quantities that have same dimensions.
.If L, C and R are the self inductance, capacitance and resistance, respectively, which of the following does not have the dimension of time?
does not have dimension of time.Match List-I with List-II.
Choose the most appropriate answer from the options given below
Given below are two statements: One is labelled as Assertion (A) and other is labelled as Reason (R).
Assertion (A): Time period of oscillation of a liquid drop depends on surface tension (S), if density of the liquid is ρ and radius of the drop is r, then 
is dimensionally correct, where K is dimensionless.
Reason (R): Using dimensional analysis, we get R.H.S. having different dimension than that of time period.
In the light of above statements, choose the correct answer from the options given below.
A physical quantity 'y' is represented by the formula 
If the percentage errors found in y, m, r, l and g are 18, 1, 0.5, 4 and p respectively, then find the values of x and p.
The magnitude of vectors 
in the given figure are equal. The direction of 
with x-axis will be:
The vernier constant of vernier callipers is 0.1 mm and it has zero error of (-0.05) cm. While measuring diameter of a sphere, the main scale reading is 1.7 cm and coinciding vernier division is 5. The corrected diameter will be _____ x 10-2 cm. (in integers)
If velocity [V], time [T] and force [F] are chosen as the base quantities, the dimensions of the mass will be:
The radius of a sphere is measured to be (7.50 ± 0.85) cm. Suppose the percentage error in its volume is x. The value of x, to the nearest integer, is _______.
Identify the pair of physical quantities which have different dimensions.
then the relative error in Z will be:A silver wire has mass (0.6 0.006) g, radius (0.5 ± 0.005) mm and length (4 ± 0.04) cm. The maximum percentage error in the measurement of its density will be:
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