NEET UG PHYSICS MCQ: WORK-ENERGY-POWER

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Which of the following statements is wrong?

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Correct option: C

If two protons are brought towards each other the PE of the system decreases.

Option C (If two protons are brought towards each other the PE of the system decreases.) is wrong because the potential energy of the system increases as two protons are brought closer due to electrostatic repulsion.

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{A}

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2\mathrm{\;m}{\mathrm{s}^{ - 1}}

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is A force

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on the particle is A motor is used to deliver water at a certain rate from a given pipe. To obtain 3 times water from same pipe in same time, by what factor should power of the motor be increased. A body projected vertically from the earth reaches a height equal to earth’s radius before returning to the earth. The power exerted by the gravitational force is greatest The speed limit of a car over a roadways bridge in the form of a vertical arc is

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