Chapter-01: Physical Quantities and Measurements

Ch-01: Physical Quantities and Measurements 
Multiple Choice Questions

After studying this unit, the students will be able to:

• Describe the crucial role of Physics in Science, Technology and society.
• Explain with examples the Science is based on physical quantities which consist of numerical magnitude and a unit.
• Differentiate between base and derived physical quantities.
• List the seven units of System International (SI) alongwith their symbols and physical quantities (standard definitions of SI units are not required).
• Interconvert the prefixes and their symbols to indicate multiple and sub-multiples for both base and derived units.
• Write the answer in scientific notation in measurements and calculations.
• Describe the working of Vernier Callipers and screw guage for measuring length.
• Identify and explain the limitations of measuring instruments such as metre rule, Vernier Callipers and Screw Guage.

Multiple Choice Questions
1.	The branch of science which deals with the study of properties of matter, energy and their mutual relationship is called:
	a. Astronomy		b. Physics
	c. Geology		d. Chemistry
2.	The study of properties of the ionic state of matter is called
	a. Plasma Physics		b. Astrophysics
	c. Sound		d. Electromagnetism
3.	The study of internal structure of earth and its activities like seismography is called:
	a. Solid state physics		b. Heat
	c. Mechanics		d. Geophysics
4.	The study of the isolated nuclei of an atom is called:
	a. Plasma Physics		b. Astrophysics
	c. Nuclear Physics		d. Electromagnetism
5.	Much of the universe is made up of:
	a. Solid		b. Liquid
	c. Plasma		d.
6.	The international system of units is abbreviated as:
	a. IS		b. SI
	c. Both a & b		d. None
7.	The terms used internationally for multiples and submultiples of various units are known as:
	a. Standard		b. Scientific Notation
	c. Prefixes		d. All of above
8.	Meter rule can measure the length accurately up to:
	a. 1 mm		b. b. 1 cm
	c. 1 m		d. 1 Km
9.	_______ can accurately measure up to one tenth of a millimeter.
	a. Meter rule		b. Vernier Callipers
	c. Screw gauge		d. All
10.	The SI unit of intensity of light is:
	a. Newton		b. Kelvin
	c. Kilogram		d. Candela
11.	One meter is equal to:
	a. 103 mm		b. 10-3 km
	c. 102 cm		d. All
12.	Volume measuring scale has a vertical scale in:
	a. Mililiter		b. cm3
	c. Both a & b		d. None
13.	One Femto is equal to:
	a. 1015		b. cm3
	c. 10-9		d. 10-12
14.	The least count of vernier calipers is:
	a. 0.1 cm		b. 0.1 mm
	c. 0.01 cm		d. Both b & c
15.	Total length of the vernier scale is:
	a. 1mm		b. 9 mm
	c. 10 mm		d. 1 cm
16.	Number of divisions on the vernier scale are:
	a. 1		b. 9
	c. 10		d. 100
17.	Length of the smallest division on main scale of the vernier calipers is:
	a. 1 cm		b. 1 mm
	c. 0.9 mm		d. All
18.	Separation between division on the vernier scale of the vernier calipers is:
	a. 1 cm		b. 1 mm
	c. 0.9 mm		d. All
19.	If zero of the vernier scale is on the right side of the zero of the main scale then it is known as _______ zero error:
	a. Positive		b. Negative
	c. None of these		d. no error
20.	If zero of the vernier scale is on the left side of the zero of the main scale then it is known as _______ zero error.
	a. Positive		b. Negative
	c. None of these		d. No error
21.	If zero of the vernier scale is on the right side of the zero of the mam scale then zero error is to be:
	a. Added		b. Subtracted
	c. Multiplied		d. Divided
22..	If zero of the vernier scale is on the left side of the zero of the mam scale then zero error is to be:
	a. Added		b. Subtracted
	c. Multiplied		d. Divided
23.	The least count of Screw Gauge is:
	a. 0.1 mm		b. 0.01 mm
	c. 0.1 cm		d. 0.01 cm
24.	Total number of divisions on the circular scale of Screw Gauge are:
	a. 10		b. 20
	c. 100		d. 200
25.	Pitch of the screw gauge is:
	a. 1 m		b. 1 mm
	c. 1 cm		d. 0.1 mm
26.	If the zero of the circular scale is above the horizontal line then the zero error will be:
	a. Positive		b. Negative
	c. None of these		d. No error
27	If the zero of the circular scale is below the horizontal line then the zero error will be:
	a. Positive		b. Negative
	c. None of these		d. No error
28	If the zero of the circular scale is above the horizontal line then the zero error is to be:
	a. Added		b. Subtracted
	c. Multiplied		d. Divided
29	If the zero of the circular scale is below the horizontal line then the zero error is to be:
	a. Added		b. Subtracted
	c. Multiplied		d. Divided
30	For scientific notation internationally accepted practice is that there should be digit(s) before the decimal point.
	a. One		b. Two
	c. Three		d. No
31	In screw gauge, the distance moved forward or backward in one complete rotation of the circular scale is known as:
	a. Least count		b. Pitch
	c. Constant		d. None of above
32	A physical balance is used to measure:
	a. Weight		b. Volume
	c. Length		d. Mass
33	Least count of mechanical stop watch is:
	a. 1 second		b. 1 Minute
	c. 0.1 second		d. 0.01 second
34	Least count of digital stop watch is:
	a. 1 second		b. 1 minute
	c. 0.1 second		d. 0.01 second
35	In any measurement, the accurately known digits and first doubtful digit are known as:
	a. 1 second		b. 1 minute
	c. 0.1 second		d. 0.01 second
36	The radius of wire is 0.022 cm. The number of significant figures in the measurements
	a. 1		b. 2
	c. 3		d. 4
37	The number of significant figures in 1.406 are:
	a. 4		b. 3
	c. 2		d. 1
38	The number of significant figures in 1.40 x 105 are:
	a. 1		b. 2
	c. 3		d. 4
39	Vernier constant is also known as ________ of vernier calipers:
	a. Pitch		b. Proportionality constant
	c. Vernier value		d. Least count
40	The zeros in between the digits are considered:
	a. Significant		b. Insignificant
	c. Constant		d. None of above
41	106 Stands for:
	a. Micro		b. Pico
	c. Nino		d. Mega
42	1 µs is equal to:
	a. 10-9 s		b. 10-3 s
	c. 10-6 s		d. 10-12 s
43	To measure correctly the volume of the liquid, the eye must be kept on the _________ surface of meniscus:
	a. Lower		b. Upper
	c. Middle		d. All of above
44	SI unit of electric charge is
	a. Ampere		b. Kelvin
	c. Pascal		d. Coulomb
45	The word science is derived from the Latin word
	a. Scientia		b. Santia
	c. Scient		d. None of these
46	Least count of digital vernier callipers is
	a. 0.1 mm		b. 0.01 mm
	c. 0.001 mm		d. 1 mm

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