Units and Measurement questions
875 published questions with worked solutions.
- Let [ε₀] denote the dimensional formula of the permittivity of vacuum. If M = mass, L = length, T = time and A = electric...
- Consider a modified Bernoulli equation. (P + A Bt^2 ) + g(h + Bt) + 1 2 V^2 = constant If t has the dimension of time then the...
- Keeping the significant figures in view, the sum of the physical quantities 52.01 m, 153.2 m and 0.123 m is:
- If , E and t represent the free space permittivity, electric field and time respectively, then the unit of E t will be :
- Four persons measure the length of a rod as 20.00 cm, 19.75 cm, 17.01 cm and 18.25 cm. The relative error in the measurement of...
- In a screw gauge, the zero of the circular scale lies 3 divisions above the horizontal pitch line when their metallic studs are...
- In a vernier callipers, 50 vernier scale divisions are equal to 48 main scale divisions. If one main scale division = 0.05 mm,...
- When both jaws of vernier callipers touch each other, zero mark of the vernier scale is right to zero mark of main scale, 4^ th...
- In an experiment, a set of reading are obtained –1.24 mm, 1.25 mm, 1.23 mm, 1.21 mm. The expected least count of the instrument...
- Which one of the following is not a measurable quantity?
- Given below are two statements : Statement I : In a vernier callipers, one vernier scale division is always smaller than one main...
- If B is magnetic field and μ0 is permeability of free space, then the dimensions of (B/μ0) is
- The maximum percentage error in the measurement of density of a wire is [Given, mass of wire = (0.60 ± 0.003)g radius of wire =...
- The energy of a system is given as E(t) = ^3 e^ - t , where t is the time and = 0.3 s^ -1 . The errors in the measurement of and...
- Match List-I with List-II. List-I: (A) Permeability of free space (B) Magnetic field (C) Magnetic moment (D) Torsional constant...
- The position of a particle moving on x-axis is given by x(t) = A t + B ^2 t + Ct^2 + D, where t is time. The dimension of ABC D...
- For an experimental expression y = 32.3 1125 27.4 , where all the digits are significant. Then to report the value of y we should...
- The least count of a screw gauge is 0.01 mm. If the pitch is increased by 75% and number of divisions on the circular scale is...
- A tiny metallic rectangular sheet has length and breadth of 5 mm and 2.5mm, respectively. Using a specially designed screw gauge...
- In a measurement, it is asked to find modulus of elasticity per unit torque applied on the system. The measured quantity has...
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