MCQ - TNPSC JTO
JTO - 540 - Trade - Workshop Calculation Science
540 UNIT 3 Mass Weight Volume Density Speed
49)
A boy lifts a 10 kg object to a height of 3 m. How much work is done? (g = 10 m/s²)
A.
B.
C.
D.
50)
Force is measured in:
A.
B.
C.
D.
51)
The formula for kinetic energy is:
A.
B.
C.
D.
52)
Which one is a vector quantity?
A.
B.
C.
D.
53)
1 Newton is equal to:
A.
B.
C.
D.
54)
A machine has 100% efficiency only when:
A.
B.
C.
D.
55)
The rate of change of velocity is:
A.
B.
C.
D.
56)
Which of the following has both magnitude and direction?
A.
B.
C.
D.
57)
The SI unit of force is:
A.
B.
C.
D.
58)
Which one is a derived quantity?
A.
B.
C.
D.
59)
The energy due to position is:
A.
B.
C.
D.
60)
What is the work done when a 20 N force moves a body by 3 m?
A.
B.
C.
D.
61)
In which case will no energy be lost?
A.
B.
C.
D.
62)
What is the mass of a body that weighs 98 N? (g = 9.8 m/s²)
A.
B.
C.
D.
63)
Velocity is zero when:
A.
B.
C.
D.
64)
The work done in lifting a 5 kg object to a height of 2 m is: (g = 10 m/s²)
A.
B.
C.
D.