Work, Energy and Power-Work Done (NEET Physics): Questions 30 - 32 of 32

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Question number: 30

» Work, Energy and Power » Work Done

MCQ▾

Question

A body is acted upon by a force F =-i + 2j + 3k. The work done by the force in displacing it from (0, 0, 0) to (0, 0, 4m) will be

Choices

Choice (4) Response
a.

10 J

b.

12 J

c.

6 J

d.

8 J

Question number: 31

» Work, Energy and Power » Work Done

MCQ▾

Question

For a reversible process, unnecessary conditions are

(1) In the whole cycle of the system, the loss of any type

(2) That the process should be too fast

(3) That the process should be slow so that the working substance should remain in thermal and mechanical equilibrium with the surroundings

(4) The loss of energy should be zero and it should be quasi-static

Select the correct answers and mark it according to the following is:

Choices

Choice (4) Response
a.

2 and 4 are correct

b.

1, 2 and 3 are correct

c.

1 and 2 are correct

d.

1 and 3 are correct

Question number: 32

» Work, Energy and Power » Work Done

Appeared in Year: 2016

MCQ▾

Question

A particle moves from a point (2i^+5j^) to (4j^+3k^) when a force of (4i^+3j^)N is applied. How much work has been done by the force?

Choices

Choice (4) Response
a.

2J

b.

11J

c.

5J

d.

8J

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