TS EAMCET Units and Measurement — practice questions
90 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice TS EAMCET Units and Measurement in the app →Units of quantities formed by combining base units are called what?A complete set of base units and derived units together is known as what?In the CGS system, which was the base unit of mass?Which unit is used for solid angle in SI?Solid angle is the intercepted area on a sphere divided by what?The metre is now defined by fixing the value of which constant?Since 2019, the kilogram rests on an exact value of which constant?The SI second is based on a hyperfine transition in which atom?Which constant, given an exact value in coulombs, now defines the ampere?When the mole is used as a unit, what must always be specified?At which CGPM were the 2018 SI redefinitions adopted?Significant figures are the reliable digits plus which digit?How many significant figures does 0.04050 kg have?A rod is measured as 30.07 m. How many significant figures?By the rule for whole numbers, how many significant figures does 8100 kg have?In scientific notation, how many significant figures does 6.400 x 10^3 g carry?Rewriting 3.20 m as 320 cm does what to its significant figures?In 0.75, the zero written before the decimal point is what?A sheet is 3.6 m by 2.135 m. Its area to correct significant figures is?Masses 12.11 g, 3.2 g and 0.456 g are added. The reported sum is?How should 5.63 g minus 5.61 g be reported?Under the even-odd rule, 4.865 rounded to three significant figures is?Round 3.475 to two decimal places using the even-odd convention.In a multi-step calculation, intermediate values should keep how many digits?The relative error of a value given to n significant figures also depends on what?The dimensions of a physical quantity are best described as what?Which symbol denotes the dimension of electric current?Adding only quantities of the same dimensions is called the principle of what?The argument of sin, log or exp in a physics formula must be what?What are the dimensions of refractive index?An equation whose terms have unequal dimensions must be what?Which task can dimensional analysis NOT do?When computing derived quantities, how are units treated?What is one advantage of a dimensional check over a units check?What is the dimensional formula of linear momentum?From F = Gm1m2/r², the dimensions of G are?Since E = hν, Planck's constant h has which dimensions?Surface tension is force per unit length. Its dimensional formula is?If speed v = At + B/t, what are the dimensions of B?Wave speed v on a string depends on tension F and mass per length μ. Then v is proportional to?Which organisation coordinates the SI?In which year were the newest SI prefixes adopted?Which SI prefix is NOT an integer power of 1000?A millionth of a metre is correctly called what?Which coherent SI unit has a prefix in its name?J/K is the coherent SI unit of heat capacity and of which quantity?One pascal is equal to what?How is a unit named after a person, like newton, written mid-sentence?How many nations signed the Metre Convention in 1875?Which CGPM adopted the International System of Units in 1960?In which year did the mole become the seventh SI base unit?Which unit joined the MKS system to form the MKSA system?Before 2019, which was the last physical artefact defining an SI unit?The electronvolt is a non-SI unit of which quantity?Which standard formalises the International System of Quantities?Which SI defining constant is described as purely technical?When is a derived SI unit called coherent?A count of exactly 4 apples has how many significant figures?Rounded by significant figures, log10(3.000 x 10^4) is?Both factors measured, 1.234 x 2.0 should be reported as?Which fundamental constant is used to define the SI kilogram?The fixed value of which constant gives the number of entities in one mole?The candela is tied to the luminous efficacy of radiation of which frequency?How many base quantities are treated as the dimensions of the physical world?In mechanics, every physical quantity can be written using which dimensions?Volume is said to have what dimension in mass and in time?Speed, average velocity and change in velocity share which dimensions?What does a dimensional equation equate a physical quantity with?What do square brackets around a quantity, like [v], indicate?In writing dimensions of a quantity, what is ignored?Force equals mass times acceleration. What are the dimensions of force?A mass is recorded as 1.200 g. How many significant figures does it carry?A reading of 101.12003 is taken with resolution 0.00001. How many significant figures does it have?The value 0.0980 has how many significant digits?A length of 0.052 km equals 52 m. How many significant figures does it have?How many significant figures does an exact counted number, such as 4 apples, have?Two rods, 1.234 m and 2.0 m long, lie end to end. What total length is reported?Divide 0.012345678 by 0.00234 and give the quotient with proper significant figures.How is 1300 written with exactly three significant figures in scientific notation?Rewriting 0.0123 L in millilitres gives which value?In a multi-step calculation, when should rounding to significant figures be applied?In measurement, accuracy describes which idea?Traditionally, precision of a measurement refers to what?Who introduced the concepts of dimensional analysis and quantity dimension in 1822?An equation whose two sides have the same dimensions satisfies which property?Which pair of quantities can be compared directly, even in different units?Converting 35 yards to metres with 1 yard = 0.9144 m gives what length?In mechanics, the base dimensions T, L and M span a space of how many dimensions?Why are length, velocity and time unsuitable as a set of base dimensions?Which base dimension is often added to T, L and M for thermodynamics?