Work, Energy and Power-Work Done (NEET Physics): Questions 12 - 17 of 32

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Question number: 12

» Work, Energy and Power » Work Done

MCQ▾

Question

The work done in lifting water from a well of depth 6 m using a bucket of mass 0.5 kg and volume 2 liter, will be

Choices

Choice (4) Response

a.

98 J

b.

117.6 J

c.

73.5 J

d.

147 J

Question number: 13

» Work, Energy and Power » Work Done

MCQ▾

Question

A particle moving in a straight line is acted by a force, which works at a constant rate and changes its velocity from u to v in passing over a distance x. The time taken will be –

Choices

Choice (4) Response

a.

32x(v2+u2v3u3)

b.

X=Vuv2+u2

c.

X=Vuv2+u2

d.

X(vu)

Question number: 14

» Work, Energy and Power » Work Done

MCQ▾

Question

A body is acted upon by a force F = 2i + 1j + k. The work done by the force in displacing it from (0, 0, 0) to (0, 0, 4m) will be

Choices

Choice (4) Response

a.

8 J

b.

12 J

c.

7 J

d.

10 J

Question number: 15

» 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, 2, 4m) will be

Choices

Choice (4) Response

a.

10 J

b.

15 J

c.

12 J

d.

8 J

Question number: 16

» Work, Energy and Power » Work Done

MCQ▾

Question

A uniform rod of length 4 m and mass 20 kg is lying horizontal on the ground. The work done in keeping it vertical with one of its ends touching the ground, will be –

Choices

Choice (4) Response

a.

392 J

b.

196 J

c.

98 J

d.

784 J

Question number: 17

» Work, Energy and Power » Work Done

MCQ▾

Question

The work done in lifting water from a well of depth 6 m using a bucket of mass 0.8 kg and volume 1 liter, will be

Choices

Choice (4) Response

a.

147 J

b.

73.5 J

c.

105.84 J

d.

98 J

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