Practice Units and Measurement RRB PYQ questions from Railway examinations, including RRB NTPC PYQ, RRB Group D PYQ, RRB JE PYQ, RRB ALP PYQ and RRB Technician PYQ . This topic-wise Physics question set covers important concepts related to Units and Measurement , helping you revise essential Physics concepts and understand the types of questions asked in RRB examinations.
Each question includes the correct answer and an explanation to help you understand the concept, strengthen your Physics fundamentals, and revise important Heat topics for RRB Railway examinations .
Start practicing Units and Measurement RRB PYQs and strengthen your Physics preparation
1
Which of the following is a unit of pressure?
A
Cubic meter
B
Newton
C
Pascal
D
Kelvin
▼ View Solution
✓ Answer:
C
Pascal
Pressure is force per unit area, so its SI unit is pascal, equal to N/m².
2
What is the value and unit of one roentgen (R), expressed in SI unit?
A
3.7×10^10 disintegrations per second
B
2.58×10^-4 coulomb per kilogram
C
1.0×10^-2 gray
D
1.6×10^-19 coulomb
▼ View Solution
✓ Answer:
B
2.58×10^-4 coulomb per kilogram
One roentgen is a conventional unit of radiation exposure. In SI terms, 1 R corresponds to 2.58×10^-4 C/kg of air.
3
The unit of work is the same as that of.
A
Momentum
B
Energy
C
Force
D
Acceleration
▼ View Solution
✓ Answer:
B
Energy
Work and energy have the same SI unit, joule (J).
4
The unit 'foot' belongs to which of the following systems of units?
A
CGS system of unit
B
SI system of unit
C
MKS system of unit
D
FPS system of unit
▼ View Solution
✓ Answer:
D
FPS system of unit
FPS stands for foot-pound-second, so foot is the length unit in the FPS system.
5
The unit of magnetization is.
A
Weber
B
Weber/Meter
C
Tesla
D
Ampere/Meter
▼ View Solution
✓ Answer:
D
Ampere/Meter
Magnetization is magnetic dipole moment per unit volume, giving the SI unit A/m.
6
Which of the following is the SI unit of sound intensity?
A
Watt
B
Pascal
C
Watt per square meter
D
Meter per second
▼ View Solution
✓ Answer:
C
Watt per square meter
Sound intensity is power transmitted per unit area, so its SI unit is W/m².
7
What is the unit of measurement of frequency?
A
Joule
B
Millisecond
C
Hertz
D
Pascal
▼ View Solution
✓ Answer:
C
Hertz
Frequency is the number of cycles or vibrations per second; its SI unit is hertz (Hz).
8
Which of the following units is used to measure only fundamental quantities?
A
Fundamental units
B
Derived units
C
Both fundamental and derived units
D
Neither fundamental units nor derived units
▼ View Solution
✓ Answer:
A
Fundamental units
Fundamental units measure the seven SI base quantities directly, while derived units are combinations of base units.
9
Which of the following is not an SI unit?
A
Hour
B
Kilogram
C
Mole
D
Meter
▼ View Solution
✓ Answer:
A
Hour
Hour is not an SI base unit. The SI base unit of time is the second.
10
What is the SI unit of solid angle?
A
Steradian
B
Candela
C
Radian
D
Meter
▼ View Solution
✓ Answer:
A
Steradian
The SI unit of solid angle is the steradian (sr). Radian is used for plane angle.
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