Physics-Work and Energy (NSTSE Class 6): Questions 60 - 65 of 69

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Question number: 60

» Physics » Work and Energy

MCQ▾

Question

According to law of conservation of energy:

Choices

Choice (4) Response

a.

Energy exists in many forms but it cannot be transformed

b.

Energy can neither be created nor be destroyed but can change into different forms

c.

Energy can be created but not destroyed and it can be transformed from one form into another

d.

Energy exists in only one form

Question number: 61

» Physics » Work and Energy

MCQ▾

Question

Which of the following has the highest Potential energy?

Choices

Choice (4) Response

a.

20 kg rock at a height of 40 m

b.

5 kg rock at a height of 150 m

c.

35 kg rock at a height of 50 m

d.

180 kg rock at a height of 2 m

Question number: 62

» Physics » Work and Energy

MCQ▾

Question

Which of the following convert electrical energy to heat energy?

Choices

Choice (4) Response

a.

TV

b.

Turbine

c.

Iron

d.

None of the above

Question number: 63

» Physics » Work and Energy

MCQ▾

Question

Thermal and light energy from sun stored in plants as ________and ________energy.

Choices

Choice (4) Response

a.

Chemical – potential energy

b.

Magnetic – electrical energy

c.

Electrical – mechanical energy

d.

Chemical – kinetic energy

Question number: 64

» Physics » Work and Energy

MCQ▾

Question

Calculate the work done when a 5N force moves an object through distance of 15 m.

Choices

Choice (4) Response

a.

20 J

b.

75 J

c.

10 J

d.

3 J

Question number: 65

» Physics » Work and Energy

MCQ▾

Question

Which of the following energy possesses a flying helicopter in the sky?

Choices

Choice (4) Response

a.

Kinetic energy but not potential energy

b.

Potential energy but not kinetic energy

c.

Potential and kinetic energy

d.

All of the above

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