, Chapter.1: MEASUREMENT
1. The.SI.standard.of.time.is.based.on:
A. the.daily.rotation.of.the.earth
B. the.frequency.of.light.emitted.by.Kr86
C. the.yearly.revolution.of.the.earth.about.the.sun
D. a.precision.pendulum.clock
E. none.of.these.
Ans:. E
2. A.nanosecond.is:
A. 109.s
B. 10−9.s
C. 10−10.s
D. 10−10.s
E. 10−12
Ans:. B
3. The.SI.standard.of.length.is.based.on:
A. the.distance.from.the.north.pole.to.the.equator.along.a.meridian.passing.through.Paris
B. wavelength.of.light.emitted.by.Hg198
C. wavelength.of.light.emitted.by.Kr86
D. a.precision.meter.stick.in.Paris
E. the.speed.of.light.
Ans:. E
4. In.1866,.the.U..S..Congress.defined.the.U..S..yard.as.exactly.3600/3937. international.meter..Thi
s.was.done.primarily.because:
A. length.can.be.measured.more.accurately.in.meters.than.in.yards
B. the.meter.is.more.stable.than.the.yard
C. this.definition.relates.the.common.U..S..length.units.to.a.more.widely.used.system
D. there.are.more.wavelengths.in.a.yard.than.in.a.meter
E. the.members.of.this.Congress.were.exceptionally.intelligent.A
ns:. C
5. Which.of.the.following.is.closest.to.a.yard.in.length?
A. 0.01.m
B. 0.1m
C. 1.m
D. 100.m
E. 1000.m
Ans:. C
2 Chapter.1:. . MEASUREMENT
, 6. There.is.no.SI.base.unit.for.area.because:
A. an.area.has.no.thickness;.hence.no.physical.standard.can.be.built
B. we.live.in.a.three.(not.a.two).dimensional.world
C. it.is.impossible.to.express.square.feet.in.terms.of.meters
D. area.can.be.expressed.in.terms.of.square.meters
E. area.is.not.an.important.physical.quantity.A
ns:. D
7. The.SI.base.unit.for.mass.is:
A. gram
B. pound
C. kilogram
D. ounce
E. kilopound.
Ans:. C
8. A. gram.is:
A. 10−6. kg
B. 10−3. kg
C. 1. kg
D. 103.kg
E. 106.kg
Ans:. B
9. Which.of.the.following.weighs.about.a.pound?
A. 0.05.kg
B. 0.5.kg
C. 5. kg
D. 50.kg
E. 500.kg
Ans:. D
10. (5.0.×.104).×.(3.0.×.106).=
A. 1.5.×.109
B. 1.5.×.1010
C. 1.5.×.1011
D. 1.5.×.1012
E. 1.5.×.1013
Ans:. C
11. (5.0.×.104).×.(3.0.×.10−6).=
A. 1.5.×.10−3
B. 1.5.×.10−1
C. 1.5.×.101
D. 1.5.×.103
E. 1.5.×.105
Ans:. B
Chapter.1: MEASUREMENT 3
, 12. 5.0.×.105.+.3.0.×.106.=
A. 8.0.×.105
B. 8.0.×.106
C. 5.3.×.105
D. 3.5.×.105
E. 3.5.×.106
Ans:. E
13.. (7.0.×.106)/(2.0.×.10−6.).=
A. 3.5.×.10−12
B. 3.5.×.10−6
C. 3.5
D. 3.5.×.106
E. 3.5.×.1012
Ans:. E
14. The.number.of.significant.figures.in.0.00150.is:
A.. . 2
B.. . 3
C.. . 4
D.. . 5
E.. . 6
Ans:. B
15. The.number.of.significant.figures.in.15.0.is:
A.. . 1
B.. . 2
C.. . 3
D.. . 4
E.. . 5
Ans:. C
16. 3.2.×.2.7.=
A. 9
B. 8
C. 8.6
D. 8.64
E. 8.640
Ans:. C
4 Chapter.1:. . MEASUREMENT