NSO Level 1- Science Olympiad (SOF) Class 9: Questions 1116 - 1120 of 1123

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Question number: 1116

» Physics » Work, Energy & Power

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Question

A labourer carried of load on his head and took rounds around the building. After each round, he disposed the load in a composed pit. The building owner refused to pay him arguing that he has not done any work. Here are some points of his argument. Which of them would justify the truth?

(1) The force acting on the load to lift it is in the downward direction.

(2) He applied force against gravity.

(3) The displacement and force were in perpendicular directions.

(4) The displacement and force were in parallel directions.

Choices

Choice (4) Response

a.

and

b.

and

c.

and

d.

and

Question number: 1117

» Physics » Work, Energy & Power

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Question

Water stored in a dam possesses

Choices

Choice (4) Response

a.

Electrical energy

b.

Potential energy

c.

No energy

d.

Kinetic energy

Question number: 1118

» Physics » Work, Energy & Power

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Question

A weight lifter lifts a dumb bell of to a height of above the ground. The work done by him to lift the weight would be

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 1119

» Physics » Work, Energy & Power

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Question

Manoj weighing climbs a vertical ladder. If the value of g be , the work done by him after climbing will be

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 1120

» Physics » Work, Energy & Power

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Question

Potential energy and kinetic energy are types of

Choices

Choice (4) Response

a.

Electrical energy

b.

Thermal energy

c.

Mechanical energy

d.

Magnetic energy

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