Work, Energy and Power Test

Result

Work, Energy and Power Test - 73

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Weekly Quiz Competition

Question 1
4 / -1

A force F acting on an object varies with distance x as shown here. The force is in newton and x in metre. The work done by the force in moving the object from x = 0 to x = 6m is

A
4.5 J

B
13.5 J

C
9.0 J

D
18.0 J

Solution
Question 2
4 / -1

Which of the following graph is correct between kinetic energy (E), potential energy (U) and height (h) from the ground of the particle

A

B

C

D
Question 3
4 / -1

A

B

C

D

Solution
Question 4
4 / -1

The potential energy of a particle varies with distance x as shown in the graph

A
C

B
B

C
B and C

D
A and D

Solution
Question 5
4 / -1

Figure shows the F - x graph. Where F is the force applied and x is the distance covered by the body along a straight line path. Given that F is in newton and x in metre, what is the work done ?

A
10 J

B
20 J

C
30 J

D
40 J
Question 6
4 / -1

The force required to stretch a spring varies with the distance as shown in the figure. If the experiment is performed with the above spring of half length, the line OA will

A
Shift towards F-axis

B
Shift towards X-axis

C
Remain as it is

D
Become double in length

Solution
Question 7
4 / -1

The work done by a force acting on a body is as shown in the graph. The total work done in covering an initial distance of 20 m is

A
225 J

B
200 J

C
400 J

D
175 J

Solution
Question 8
4 / -1

The diagram represent the potential energy U of a function of the inter-automatic distance r. Which diagram corresponds to stable molecules found in nature.

A

B

C

D
Question 9
4 / -1

Given below is a graph between a variable force (F) (along y-axis and the displacement (X) (along x-axis) of a particle in one dimension. The work done by the force in the displacement interval between 0 m and 30 m is

A
275 J

B
375 J

C
400 J

D
300 J
Question 10
4 / -1

Force F on a particle moving in a straight line varies with distance d as shown in the figure. The work done on the particle during its displacement of 12 m.

A
13 J

B
18 J

C
21 J

D
26 J