Work, Energy and Power (NEET Physics): Questions 1 - 6 of 61

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Question number: 1

» 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 1.3 kg and volume 1 liter, will be

Choices

Choice (4) Response
a.

135.24 J

b.

105.84 J

c.

147 J

d.

98 J

Question number: 2

» Work, Energy and Power » Work Done

MCQ▾

Question

A chain of linear density 10 kg/m and length 8 m is lying on the table with 2 m of chain hanging from the edge. The work done in lifting the chain on the table will be –

Choices

Choice (4) Response
a.

176 J

b.

392 J

c.

532 J

d.

116 J

Question number: 3

» Work, Energy and Power » Work Done

MCQ▾

Question

A force F = (3 - 1x + 5x 2) N is applied on a 2 kg mass which displaces it from x = 0 to x = 2 m. Work done in joule is -

Choices

Choice (4) Response
a.

17.33

b.

13

c.

20.45

d.

7.55

Question number: 4

» Work, Energy and Power » Work Done

MCQ▾

Question

The work done in pulling a body of mass 3 kg along an inclined plane (angle 50°) with coefficient of friction 0.2 through 2 m, will be -

Choices

Choice (4) Response
a.

52.56 J

b.

94.08 J

c.

98.08 J

d.

91.08 J

Question number: 5

» Work, Energy and Power » Work Done

MCQ▾

Question

The work done in pulling a body of mass 6 kg along an inclined plane (angle 45°) with coefficient of friction 0.2 through 2 m, will be -

Choices

Choice (4) Response
a.

91.08 J

b.

90.08 J

c.

98.08 J

d.

99.72 J

Question number: 6

» Work, Energy and Power » Potential Energy

MCQ▾

Question

The potential energy between two atoms in a molecule is given by, UX=aX12bX6 where a and b are positive constant and x is the distance between the atoms. The atoms is an stable equilibrium, when-

Choices

Choice (4) Response
a.

x=(2ab)16

b.

x=0

c.

x=(a2b)16

d.

x=x=(11a5b)16

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