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11
MCQ (Single Correct Answer)

A body is moving unidirectionally under the influence of a source of constant power supplying energy. Which of the diagrams shown in figure correctly shown the displacement-time curve for its motion?

A
B
C
D
12
MCQ (Single Correct Answer)

Which of the diagrams shown in figure most closely shows the variation in kinetic energy of the earth as it moves once around the sun in its elliptical orbit?

A
B
C
D
13
MCQ (Single Correct Answer)

Which of the diagrams shown in figure represents variation of total mechanical energy of a pendulum oscillating in air as function of time?

A
B
C
D
14
MCQ (Single Correct Answer)

A mass of 5 kg is moving along a circular path of radius 1 m. If the mass moves with $$300 \mathrm{~rev} / \mathrm{min}$$, its kinetic energy would be

A
$$250 \pi^2$$
B
$$100 \pi^2$$
C
$$5 \pi^2$$
D
0
15
MCQ (Single Correct Answer)

A raindrop falling from a height $$h$$ above ground, attains a near terminal velocity when it has fallen through a height $$(3 / 4) h$$. Which of the diagrams shown in figure correctly shows the change in kinetic and potential energy of the drop during its fall up to the ground?

A
B
C
D