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

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

1.four

2.three

3.two

4.none of these

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

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`

3.percentage uncertainties are divided

4.absolute uncertainties are divided

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

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

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

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

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

1.1

2.2

3.3

4.4

1.force

2.pressure

3.momentum

4.energy

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

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

1.one

2.two

3.three

4.four

1.three

2.five

3.two

4.none

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

1.chemistry

2.physics

3.geology

4.biology

1.E=mc2

2.Vf=Vi+at

3.S=Vt2

4.S=1/2at2

1.chemistry

2.astronomy

3.geology

4.biology

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

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

## More MCQS

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