Physics Measurements and Experimentation Exercise1a
Please Select
Q1 What is meant by measurement?
Q2 What do you understand by the term unit?
Q3 What are the three requirements for selecting a unit of a physical quantity?
Q4 Name the three fundamental quantities.
Q5 Name the three systems of unit and state the various fundamental units in them.
Q6 Define a fundamental unit.
Q7 What are the fundamental units in S.I. system? Name them along with their symbols.
Q8 Explain the meaning of derived unit with the help of one example.
Q9 Define standard metre.
Q10 Name two units of length which are bigger than a metre. How are they related to the metre?
Q11 Write the name of two units of length smaller than a metre. How are they related to the metre?
Q12 How is nanometer related to Angstrom?
Q13 Name the three convenient units used to measure length ranging from very short to very long value. How are they related to the S.I. unit?
Q14 Name the S.I unit of mass and define it.
Q15 Complete the following:
(a) 1 light year = ________ m
(b) 1 m = ________ Å
(c) 1 m = ________ µ
(d) 1 micron = ________ Å
(e) 1 fermi = ________ m
Q16 State two units of mass smaller than a kilogram. How are they related to kilogram?
Q17 State two units of mass bigger than a kilogram. Give their relationship with the kilogram.
Q18 Complete the following:
(a) 1g = ______kg
(b) 1mg = ________kg
(c) 1 quintal = ________kg
(d) 1 a.m.u (or u) = ________kg
Q19 Name the S.I. unit of time and define it.
Q20 Name two units of time bigger than a second. How are they related to second?
Q21 What is a leap year?
Q22 ‘The year 2020 will have February of 29 days’. Is this statement true?
Q23 What is a lunar month?
Q24 Complete the following:
(a) 1 nano second = ________s
(b) 1 µs = _______s
(c) 1 mean solar day = ________s
(d) 1 year = ________s
Q25 Name the physical quantities which are measured in the following units:
(a) u
(b) ly
(c) ns
(d) nm
Q26 Write the derived units of the following:
(a) Speed
(b) Force
(c) Work
(d) Pressure
Q27 How are the following derived units related to the fundamental units?
(a) Newton
(b) Watt
(c) Joule
(d) Pascal
Q28 Name the physical quantities related to the following units:
(a) km2
(b) newton
(c) joule
(d) pascal
(e) watt
Multiple Choice type Questions :
Q1 The fundamental unit is:
(a) newton
(b) pascal
(c) hertz
(d) second
Q2 Which of the following unit is not a fundamental unit:
(a) metre
(b) litre
(c) second
(d) kilogram
Q3 The unit of time is:
(a) light year
(b) parsec
(c) leap year
(d) angstrom
Q4 1 Å is equal to:
(a) 0.1 nm
(b) 10-10cm
(c) 10-8m
(d) 104µ
Q5 ly is the unit of:
(a) time
(b) length
(c) mass
(d) none of these
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