FSc PHYSICS-Measurements (SMART INSTITUTE)

A detailed and educational illustration featuring various SI units and measurements in physics, including icons for length, mass, time, temperature, and energy, arranged in an engaging and colorful layout.

FSc Physics Measurements Quiz

Test your knowledge of physics measurements with our comprehensive quiz designed for FSc students. This quiz consists of 50 multiple-choice questions covering standards, units, and physical quantities.

Enhance your understanding of:

SI Units and Constants
Dimensional Analysis
Measurement Errors
Thermal Conductivity

50 Questions12 MinutesCreated by CalculatingStar42

01. SI units of gas constant are:

W K-1 mol-1

J K-1 mol-1

N K-1 mol-1

Erg K-1 mol-1

02-The unit of permittivity of free space ε0 is:

Coulomb/Newton-meter

( Coulomb )^2 / (Newton-m)^2

Newton-m^2 / ( Coulomb )^2

Coulomb^2 / (Newton-m^2)

03-The correct unit of Thermal conductivity is:

Joule m-2 sec-1

Joule-sec

Joule m-1 sec-1 ( C )-2

Joule m-1 sec-1 ( C )-1

04-WOF is a derived unit:

Kg ms-1

Mole

05-The velocity of a particle is given by

v=at² + bt + c

If v is measured in ms-1 and t is measured in s, the unit of c:

A is ms-1

C is ms-1

B is ms-1

A and b are same but that of c is different

06-WOF is not measured in the units of energy.

Couple x angle turned through

Force x distance

Moment of inertia x (angular velocity)^2

Impulse x time

07-WOF is not an inter-disciplinary area of Physics:

Geo-physics

Bio-physics

Astro-physics

Physics of solids

08-The least count of a stop watch is 0.1 sec. The time of 20 oscillations of the pendulum is found to be 20 sec. The percentage error in the time period is

0.25 %

0.75 %

0.5 %

1.0 %

09-Physics is an experimental science and the scientific method emphasizes on:

Accurate measurements

Uncertain measurements

% age measurements

Approximate measurements

10-Steradian is the SI unit of:

Plane angle

Mass

Solid angle

Force

11-The radius of a ball is (5.2 ± 0.2 ) cm. The percentage error in the volume of the ball is:

11 %

7 %

4 %

9 %

12-The unit of Stefan's constant is:

Wm-2 K-1

WmK-4

Wm-2 K-4

Nm-2 K4

13-WOF pairs of electrical units are the units equivalent?

Coulomb, As-1

Pascal, Ns

Farad, C-1 V

Volt, JC-1

14-Solid angle is a

Two dimensional angle

One dimensional

Three dimensional angle

All of these

15-Energy per unit volume represents:

Pressure

Force

Thrust

Work

16-Characteristics for an ideal standard are

Variable and non-accessible

Invariable and non-accessible

Invariable and accessible

Variable and accessible

17-The measurement of a physical quantity may be subjected to random errors and to systematic errors. Which statement is correct?

Random errors can be reduced by taking the average of several measurements

Random errors are always caused by the person taking the measurement

A systematic error cannot be reduced

A systematic error results in a different reading each time the measurement is taken.

18-Silicon is abundantly obtained from

Water

Metal

Sand

Stones

19-The unit of R/L is same as

Decay rate

Frequency

Decay constant

All of these

20-The unit of percentage error is

Percentage error is unitless

Errors have gotten their own units which are different from that of Physical quantity measured

Different from that of Physical quantity

Same as that of Physical quantity

21-Which one is a base quantity?

Kilogram

Kelvin

Conventional Current

Charge

22-There is no SI base unit for area because

An area has no thickness, hence no physical standard can be built

We live in a three (not a two) dimensional world

It is impossible to express square feet in terms of meters

Area can be expressed in terms of square meters

23. 5.0 x 10⁵ + 3.0 x 10⁶ =

8.0 x 10^5

8.0 x 10^6

5.3 x 10^5

3.5 x 10^6

24-The number of significant figures in 15.0 is

25-Suppose A=BC, where A has the dimension L/M and C has the dimension L/T. Then B has the dimension:

T/M

L^2/TM

TM/L^2

M/T

26-Physical quantity whose definition is based upon other physical quantity is:

Current

Charge

Time

Temperature

27-Identify the base quantity

Solar constant

Charge

Intensity of light

All of these

28-How many principle characteristics are essential for an ideal standard for measurement of base quantity?

29-Steradian is a unit of

Plane angle

Charge

Solid angle

Resistance

30-The unit of 1/√LC is same as that of

31-WOF is not SI base quantity?

Temperature

Mole

Length

Current

32-Silicon is abundantly obtained from

Water

Metal

Sand

Stones

33-WOF gives the prefixes in increasing order:

Giga, mega, micro

Micro, mega, pico, giga

Pico, micro, mega, giga

Giga, mega, peco, micro

34-One nanometer is equal to

10^-9 cm

10^-7 cm

10^-6 cm

10^9 cm

35-The dimensional formula of PV, where P is pressure and V is volume is the same as that of

Work

Power

Elastic modulus

Pressure

36-WOF pairs of units are both SI base units?

Ampere, degree celsius

Coulomb, degree celsius

Ampere, kelvin

Coulomb, kelvin

37-What is the ratio of 1 micrometer / 1 giga meter

10-3

10-12

10-9

10-15

38-WOF is least multiple?

Deca

Micro

Peta

Deci

39-Which physical quantity have same units in all systems of units?

Length

Time

Mass

Power

40-In SI number of physical quantities are

Infinite

41-The error in the measurement of the radius of a sphere is 1%. The error in the measurement of its volume is

1 %

5 %

3 %

8 %

42-A stop watch is accurate upto 1/100 of a second, the absolute uncertainty of the watch is

0.1 s

0.01 s

0.2 s

1 s

43-WOF is unit-less

Sin θ

Frequency

Both sin θ and θ

44-The percentage error in the measurement of mass and speed are 5 % and 6 % respectively. The maximum error in the measurement of momentum is:

11 %

30 %

15 %

90 %

45-The main time period of second's pendulum is 2.00s and mean absolute error in the time period is 0.05s. To express maximum estimate of error, the time period should be written as

( 2.00 ± 0.01 )s

( 2.00 ± 0.1 )s

( 2.00 ± 0.05 )s

( 2.00 ± 0.025 )s

46-The SI unit of couple arm:

Kilo meter

Mili meter

Centi meter

Meter

47-An experiment measured quantities a, and b and then x is calculated from x=ab^2 . If the percentage errors in a, b, c are ±1 % and ±3 % respectively, the percentage error in x can be:

±13 %

±4 %

±7 %

±1 %

48-The emf induced in a coil by a changing magnetic flux is equal to the rate of change of flux with time. Which is the unit for magnetic flux?

Kg m2s-2 A-1

Kg m2s A-1

Kg m2s-2 A

Ms-2 A-1

49-The angle made by an area of a sphere equal to the square of its radius at its centre is:

One degree

One revolution

One radian

One steradian

50-Least count of Vernier Callipers is

1 mm

0.1 mm

0.001 mm

0.1 cm

FSc PHYSICS-Measurements (SMART INSTITUTE)

FSc Physics Measurements Quiz

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