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Measurement and Measuring Instruments

Unit – V Measurement and Measuring Instruments - PHYSICS

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Question 1
The smallest value that any instrument can measure is called _______ of the instrument.
A
range
B
least count
C
millimeter
D
error
Question 2
The values between the minimum measurable value and the maximum value that can be measured is called _______.
A
range
B
error
C
length
D
least count
Question 3
If the value is greater than that of actual value, it is called _______ error.
A
negative
B
parallax
C
positive
D
zero
Question 4
The least count of the Vernier is
A
0.01 mm
B
1 mm
C
0.01 cm
D
1 cm
Question 5
The accuracy of digital balance
A
1 g
B
.1 g
C
10 g
D
0.001 g
Question 6
The SI unit of weight is
A
gram
B
kilogram
C
milligram
D
newton
Question 7
_______ is used to measure the weight of human beings.
A
spring balance
B
weigh bridge
C
Medical scale
D
Digital balance
Question 8
_______ is commonly used for measuring mass is shops.
A
Physical balance
B
Weigh bridge
C
Two pan balance
D
Hydraulic bridge
Question 9
_______ is the most accurate clock.
A
quarts clock
B
mechanical clock
C
water clock
D
atomic clock
Question 10
The earth is divided into _______ time zones.
A
24
B
12
C
10
D
100
Question 11
_______ is used to measure the weight of lorries.
A
Hydraulic scale
B
Weigh bridge
C
Spring balance
D
Digital balance
Question 12
The clock based on the principle of the shadow of an object being formed on the ground
A
Water clock
B
sun dial
C
graduated candle
D
quarts clock
Question 13
The SI unit of mass is _______.
A
newton
B
kilogram
C
gram
D
milligram
Question 14
If the zero of the vernier scale is to the left of the main scale zero, the error is
A
positive
B
negative
C
none of these
D
parallax
Question 15
In ancient times the position of _______ was used to find time during night.
A
moon
B
candles
C
shadow
D
stars
Question 16
1.5 x 107ms is equivalent to
A
0.5 s
B
5 s
C
50 s
D
500 s
Question 17
which of the following parts of a Vernier calipers are used to measure the internal diameter of a cylindrical pipe?
A
depth probe
B
retainer
C
lower jaws
D
upper jaws
Question 18
Match the following:
Sl.No Characteristics   Value
  • 1.
  • 2.
  • 3.
  • 4.
  • Least Count
  • Range
  • Positive Error
  • Negative Error
  • a)
  • b)
  • c)
  • d)
  • Greater than actual value
  • Less than actual value
  • Smallest value
  • Between minimum and maximum value
A
4 3 1 2
B
3 4 1 2
C
1 2 4 3
D
2 4 3 1
Question 19
Match the following:
Sl.No Clock   Principle
  • 1.
  • 2.
  • 3.
  • 4.
  • Atomic clock
  • Quartz clock
  • Water clock
  • Mechanical clock
  • a)
  • b)
  • c)
  • d)
  • Steady flow of water
  • galileo’s discovery
  • ceasium atom
  • Liquid crystal display
A
4 1 2 3
B
2 1 4 3
C
3 4 1 2
D
3 4 1 2
Question 20
Reason and Assertion
  • Assertion (A)  :  The unit of mass is kilogram.
  •     Reason (R)      :  Mass of a body is the measure of the quantity of matter contained in a body.
A
A is correct R is wrong
B
R is correct A is wrong
C
A is correct R explains A
D
R does not explain A
Question 21
  • Assertion (A)  : Hydraulic scale is used to measure the weight of lorries.
  • Reason  (R)     : Medical scale is used to measure the body weight of human beings.
A
A is correct R is wrong
B
R is correct A is wrong
C
A is correct R explains A
D
Both A and R are correct
Question 22
  • Assertion (A)  :  Atomic clock is the most accurate clock.
  •     Reason (R)      :  Time period is directly proportional to length
A
A is correct R is wrong
B
R is correct A is wrong
C
A is correct R explains A
D
Both A and R are wrong
Question 23
  • Assertion (A)  : Water clocks are based on containers which are slowly filled with water.
  •     Reason (R)      : One complete to and for motion of the bob is amplitude
A
A is correct R is wrong
B
R is correct A is wrong
C
A is correct R explains A
D
Both A and R are wrong
Question 24
  • Assertion (A)  : The symbol for nano is ŋ
  •     Reason (R)      : nano is 10-9
A
A is correct R is wrong
B
A is wrong R is correct
C
A is correct R explain A
D
R does not explains A
Question 25
If the zero of the Vernier scale is to the right of the main scale zero, the error is …………………
A
Positive
B
negative
Question 26
…………… varies from place to place.
A
mass
B
weight
Question 27
……………. Balance is used in jewellery shop
A
common balance
B
digital balance
Question 28
…………. Is the most accurate clock
A
quartz clock
B
atomic clock
Question 29
………….. time is calculated by the position of the sun.
A
Local time
B
standard time
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