ECAT/ECAT Physics Measurements Mcqs Questions Sample Test,Sample questions

Question:
  Number of significant figures in 0.0173 are

1.three

2.four

3.five

4.two


Question:
  Steradian is the SI unit of

1.plane angle

2.solid angle

3.both plane angle and solid angle

4.neither plane angle nor solid angle


Question:
  The unmber of significant figures in the length of a bar 6200mm measured by meter rod are

1.four

2.three

3.two

4.none of these


Question:
  Unit of G is?

1.Nm2Kg2

2.Nm2Kg

3.Nm2Kg-2

4.none


Question:
  Which of the following is not a correct representation method for prefixes

1.1mm

2.10km

3.1000um

4.both (a) and (b)


Question:
 1024 can be written in scientific notation as

1.1.024x103

2.2 Raised to power 10

3.0.000976

4.1/0.00097


Question:
 An ideal standard of measurement of a base quantity has characteristics

1.accessible

2.invariable

3.transportable

4.only a and b are correct


Question:
 Dimensional analysis is helpful for

1.deriving a possible formula

2.checking the homogeneity of a physical equation

3.verification of laws

4.only a and b are correct


Question:
 How many types of units are in SI?

1.one

2.two

3.three

4.four


Question:
 In any measurement the significant figures are

1.all accurately known and all doubtful digits

2.only accurately known digits

3.only doubtful digits

4.all accurately known digits and the first doubuful digit


Question:
 In multiplication and division of measurement

1.percentage uncertainties are added

2.absolute uncertainties are added

3.percentage uncertainties are divided

4.absolute uncertainties are divided


Question:
 In scientific notation numbers are expressed in

1.power of ten

2.powers of two

3.reciprocal

4.decimal


Question:
 One pico stands for

1.10 raised to power -15

2.10 raised to power -12

3.10 raised to power -9

4.10 raised to power -6


Question:
 The dimension of force is

1.MLT-1

2.MLT-2

3.ML-1T

4.ML-1T-2


Question:
 The error in measurement may occur due to

1.inexperience of a person

2.the faulty apparantus

3.inappropriate method

4.due to all reasons in a b and c


Question:
 The number 76.85 is rounded off upto two significant figures as

1.76.8

2.77

3.76.9

4.none of these


Question:
 The uncertainty in a measurement may occur due to

1.limitation of an instrument

2.natural variation of the object to be measured

3.inadequate of technique

4.all given in a b and c


Question:
 To reduce the uncertainty in the timing experiment

1.highly precise instrument

2.conduct at room temperature

3.count more number of vibration

4.both a and c


Question:
 Which one is the dimensionally correct equation?

1.f=vt

2.S=Vit+1/2at2

3.V=St

4.V=f/t


Question:
A digit zero in a measurement

1.may be significant may not significant

2.always significant

3.always insignificantsig

4.significant only if left to a significant figure


Question:
Absolute uncertainty in a measurement depends upon

1.magnitude of the measurement

2.least count of the instrument

3.percentage error in the measurement

4.all of a b and c


Question:
How many main frontiers of fundamental science?

1.1

2.2

3.3

4.4


Question:
ML-1 T-2 is the dimension of

1.force

2.pressure

3.momentum

4.energy


Question:
One light year is equal to

1.9.5x1015m

2.9.5x1015sec

3.9.5x1015Km

4.9.5x1015cm


Question:
Preftix deca represents

1.10 Raised to power 1

2.10 Raised to power 2

3.10 Raised to power 3

4.10 Raised to power -1


Question:
Random errors can be reduced by

1.taking zero correction

2.comparing the instrument with another more accurate one

3.taking mean of several measurement

4.all methods explained in a b and c


Question:
SI unit of coefficient of viscosity is

1.Kg.m.S-1

2.Kg m-1.S-1

3.Kg.m.S

4.Kg-1.m-1.S-1


Question:
Smaller the least count of the instrument more is the measurement

1.accurate

2.precise

3.accurate and precise

4.none of these


Question:
The number of categories in which physical quantities are divided are

1.one

2.two

3.three

4.four


Question:
The number of significant figures in 5.400 are

1.three

2.five

3.two

4.none


Question:
The unit of force is _________ and its symbol is __________. Which is the correct pair?

1.Newton n

2.Newton N

3.newton n

4.newton N


Question:
Three students measured length of a needle with meter rod and recorded as : (i) 0.2145m (ii) 0.21m (iii) 0.214m Which one is correct record?

1.only (i)

2.only (ii)

3.only (iii)

4.both (i) and (ii)


Question:
Total uncertainty in result obtained from the subtraction of two measurement is equal to

1.sum of their absolute uncertainties

2.difference of their absolute uncertainties

3.verification of laws

4.division of their absolute uncertainties


Question:
Which branch of science plays an important role in the development of technology and engineering?

1.chemistry

2.physics

3.geology

4.biology


Question:
Which equation is not dimensionally correct?

1.E=mc2

2.Vf=Vi+at

3.S=Vt2

4.S=1/2at2


Question:
Which one is not a branch of physical sciences?

1.chemistry

2.astronomy

3.geology

4.biology


Question:
Which one is the correct representation of the unit of pressure?

1.Newton/Meter2

2.newton/meter2

3.Newton/meter2

4.newton/Meter2


Question:
Which one is the derived quantity in SI units?

1.electric current

2.electric charge

3.plane angle

4.amount of substance


Question:
Which one is the highest power multiple?

1.giga

2.beta

3.mega

4.deca


Question:
Zero error of the instrument is a type of

1.random error

2.personal error

3.systematic error

4.classified error


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