Units and Measurement questions
875 published questions with worked solutions.
- A force F is applied on a square plate of side L. If the percentage error in determining F is 3% and that in L is 2%, then the...
- In an experiment four quantities p, q, r and s are measured with percentage 3%, 2%, 3% and 1 % respectively. Quantity 'A' is...
- A physical quantity 'X' is related to four measurable quantities 'a', 'b', 'c' and 'd' as X = a^ 2 b^ 3 c^ 5/2 d^ -2 . The...
- A student measured the diameter of a wire using a screw gauge with the least count 0.001 cm and listed the measurements. The...
- The amount of heat produced in an electric circuit depends upon the current (I), resistance (R) and time (t). If the error made...
- N divisions on the main scale of a vernier calliper coincide with (N + 1) divisions of the vernier scale. If each division of...
- The electrical resistance R of a conductor of length l and area of cross section a is given by R = l a where ' ρ ' is the...
- Resistance of a given wire is obtained by measuring the current flowing in it and the voltage difference applied across it. If...
- A spectrometer gives the following reading when used to measure the angle of a prism. Main scale reading: 58.5 degree Vernier...
- Let [ _0] denote the dimensional formula of the permittivity of vacuum. If M = mass, L = length, T = time and A = electric...
- From the following, the quantity (constructed from the basic constants of nature), that has the dimensions, as well as correct...
- The dimensions of angular momentum, latent heat and capacitance are, respectively.
- If the time period t of the oscillation of a drop of liquid of density d, radius r, vibrating under surface tension s is given by...
- In terms of resistance R and time T, the dimensions of ratio of the permeability μ and permittivity ε is:
- From the following combinations of physical constants (expressed through their usual symbols) the only combination, that would...
- Match List-I (Event) with List-II (Order of the time interval for the happening of the event) and select the correct option from...
- Two thin wires, Wire-1 of diameter 0.650 mm and Wire-2 of unknown diameter d are given. To obtain the value of d, the diameters...
- In a new system of units, the units of mass, length, time and current are 5 kg , 5 m , 5 s and 5 A , respectively. If _0 and _0...
- Each side of a metallic cube of mass 5.580 kg is measured to the 9.0 cm. Keeping the significant figures in view, the density of...
- In a vernier calliper, 20 VSD coincide with 16 MSD (each division of length 1 mm). The least count of the vernier callipers is:
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