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Physics 9 Chapter 6 - Work and Energy - 2
1.
In case when force and displacement are not parallel, then which component causes the body to move on the surface?
a) F
y
b) F
x
c) F
z
d) All of these
2.
In case when force and displacement are not parallel, then which component causes the body to move on the surface?
a) X-component
b) All of these
c) Z-component
d) Y-component
3.
In case when force and displacement are not parallel, then which component does not cause the body to move on the surface?
a) F
y
b) F
z
c) F
x
d) All of these
4.
In case when force and displacement are not parallel, then what is the mathematical formula of work?
a) W = F
x
/ S
b) W = F
y
x S
c) W = F
x
x S
d) W = F
y
/ S
5.
In case when force and displacement are not parallel, then what is the mathematical formula of work?
a) W = F / (S sin θ)
b) W = F / (S cos θ)
c) W = F S cos θ
d) W = F S sin θ
6.
What is done when force acting on a body displaces it in the direction of a force?
a) Power
b) Work
c) Efficiency
d) Energy
7.
Of a force of 25 N pulls the stone in its direction through a distance of 5m. What will be the magnitude of work?
a) 175 J
b) 5 J
c) 125 J
d) 200 J
8.
Which of the following is the scalar quantity?
a) Work
b) Force
c) Momentum
d) Torque
9.
Which of the following quantity work is?
a) Scalar quantity
b) Base quantity
c) Fundamental quantity
d) Vector quantity
10.
What will be the work done in lifting the block of mass 2 kg through a height of 5 m above ground?
a) 10 J
b) 50 J
c) 2.5 J
d) 100 J
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