Units and Measurement

Class 11 · Physics

80 questions30 easy33 medium17 hard

Sample Questions

Q1.The dimensional formula of torque is the same as that of:

  • Aforce
  • Bmomentum
  • Cenergy
  • Dpower

Q2.If length l = 16.2 +/- 0.1 cm and breadth b = 10.1 +/- 0.1 cm, the percentage error in the area l x b is approximately:

  • A0.6%
  • B1.0%
  • C1.6%
  • D2.0%

Q3.The number of significant figures in 0.2370 g cm^-3 is:

  • A3
  • B4
  • C5
  • D2

Q4.The mass of a box is 2.30 kg. Two gold pieces of 20.15 g and 20.17 g are added. The total mass to correct significant figures is:

  • A2.34 kg
  • B2.3403 kg
  • C2.340 kg
  • D2.34032 kg

Q5.3.0 m s^-2 equals how many km h^-2?

  • A1.08 x 10^4
  • B3.888 x 10^4
  • C38880
  • D10800

Q6.This is a sample question to preview what you'll get in the full practice test...

  • A. Option one
  • B. Option two
  • C. Option three
  • D. Option four
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Concepts Covered

Base and Derived UnitsDimensional AnalysisDimensional FormulaeOrder of MagnitudePrinciple of HomogeneityRounding OffSI UnitsSignificant FiguresUnit Conversion

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