GTU MCQ Material, Best Physics GTU MCQ Quiz, GTU MCQ Mock Test Material, With Note Book PDF Download For Applied Physics Units And Measurement
Applied Physics Chapter Units And Measurement (Q&A)
1.
_______ unit is a fundamental Physical unit?
Answer: m
2. No.
of Significant figures in 1.60 × 10⁻¹⁹ is
__________
Answer : 3
3. For
a vernier calliper 1 division of main scale is 1mm and total 30 divisions in
vernier scale. It has_______least count.
Answer : 0.03mm
4. S.I.
unit of work is __________
Answer: Joule
5.
Which Physical quantity is derived from other physical quantities.
Answer: Vector
6. Energy/time
= __________
Answer: Power
7.
____________ instrument is used to measure thickness of wire?
Answer: Micrometer screw gauge
8.
__________ physical quantities is a derived one ?
Answer: Force
9.
______________ physical quantities is not a fundamental physical quantity in
the SI system ?
Answer: Quantity of matter
10. Number
of significant figures in 5.897 and 0.005055 are_________ respectively.
Answer: 4 and 4
11. ________
is not a physical quantity.
Answer: Kilogram
12. The
SI unit of Luminous intensity is __________ .
Answer: Candela
13. Which
of the following physical quantity has derived unit ?
Answer: Volume
14. The
significant figures in 3.012× 10⁻⁴ m² are_______.
Answer : 3, 0, 1, 2
15. 1Ǻ
= ______cm.
Answer : 10⁻⁸
16. 1
Newton = ______ dyne
Answer : 10⁻⁵
17. 1
Joule = ______ erg
Answer: 10⁷ erg
18. Which
one of the following is a derived quantity?
Answer: Acceleration
19. 100
N= ______ dyne
Answer : 10⁵
20. 0.05840
has ______ significant figures.
Answer: 4
21. A
micrometer screw gauge has 100 divisions on its circular scale and its pitch is
1mm. The least count of the screw?
Answer : 0.01mm
22. The
S. I. unit of electrical current is ______
Answer: Ampere
23. The
product of mass and velocity is called ______
Answer: Momentum
24.
Precision of measurment depends on _____.
Answer : Least count of instrument
25. Pitch
of Micrometer screw is 1 mm. If its circular scale divided in equal 100
divisions ,then its Least counts is ________.
Answer: 10² m
26. Which
is the following is a vector quantity?
Answer: Momentum
27.
C.G.S. unit of heat is ______.
Answer: Calorie
28.
The standard used for measument of a physical quantity is called a _______.
Answer: Unit
29.
Which of the following requirements of standard units ?
Answer: - It should be internationally accepted.
- It should be define
and well defined.
- It should be
invariable and fixed with time and place.
- It should be easily
reproducible.
- It should be easily
comparable with other similar units.
- It should be readily
available
- It should be suitable
size.
30.
A ____________ is a quantity which can be measured.
Answer: physical quantity
31.
Difference between the actual value of a quantity and the value obtained by a
measurment is called an...
Answer: Error
32.
The total number of digits which are directly obtained from a particular
measurment are called _____.
Answer: Significant figures
33.
The physical quantities which do not depend on any other physical quantities
for their measurment are known as _________ .
Answer: Fundamental quantities
34. The
physical quantities which depend on one or more fundamental quantities for
their measurment are known as _________ .
Answer: Derived quantity
35. Least
count of Vernier Calipers is proportional to
Answer: Total division of vernier scale
36.
Force is ___________ .
Answer: Vector quantity
37. 0.008409
has __________ significant figures.
Answer: 4
38. Every
measurement consists of a number and a ___________ .
Answer: Unit
39.
Light year is a unit of ________ .
Answer: Distance
40. In
both MKS and CGS system, the unit of __________ is the same.
Answer: Time
41.
Inner diameter of a hollow cylinder can be measured with ___________ .
Answer: Vernier calipers
42.
It is defined as closeness of a measurment of a accepted value for a specific
physical quantity. It is expressed in terms of error is called..
Answer: Accuracy
43. Which
of the following unit is diameter of steel balls, diameter of a thin wire ?
Answer: Micrometer screw gauge
44. Which
of the following use of the Vernier calipers ?
Answer: - Vernier calipers one can measure diameter of solid cylinder,
internal and external diameter of a hollow cylinder, thickness of a thin plate
of glass of any material, and depth of liquid in a small vessel.
45.
The agreement between the numerical values of two or more measurment made in
the same way and expressed in terms of deviation is called...
Answer: Precision
46. The
mass of a litre pure water at 4°C is known as ______ .
Answer: Kilogram
47. It
is defined in terms of the standard wavelength of light and is equal to 1650763.73
wavelengths in vacuum of radiation corresponding to transition between the
energy levels `2p_{10}` and `5d_{5}` of krypton 86 atom is called..
Answer: Meter
48.
Those physical quantities which posses only magnitude and no direction in space
such as temperature, mass, time, volume, and speed of light are known as
____________ .
Answer: Scalar quantities
49. Those
physical quantities which have magnitude and direction both are called
____________ or vectors such as velocity, acceleration, force etc.
Answer: Vector quantities
50.
The Symbol of unit is Density.
Answer: Kg/m³
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