NEET Physics: Questions 811 - 815 of 2142

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Question number: 811

» 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: 812

» Laws of Motion » Laws of Friction

MCQ▾

Question

The contact force exerted by a body A on another body B is equal to the normal force between the bodies. We conclude that -

(1) The surfaces must be smooth

(2) Force of friction between two bodies may be equal to zero

(3) Magnitude of normal reaction is equal to that of friction

(4) Bodies may be rough

Which of the following options are correct?

Choices

Choice (4) Response

a.

1 and 4

b.

2 and 4

c.

1 and 2

d.

3 and 4

Question number: 813

» Work, Energy and Power » Potential Energy

MCQ▾

Question

The potential energy between two atoms in a molecule is given by, Equation 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.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 814

» Laws of Motion » Force and Inertia

MCQ▾

Question

In above question, what is the tension in each string?

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 815

» Work, Energy and Power » Work Done

MCQ▾

Question

The work done in pulling a body of mass 5 kg along an inclined plane (angle 60°) with coefficient of friction 0.2 through 2 m, will be -

Choices

Choice (4) Response

a.

94.08 J

b.

91.08 J

c.

98.08 J

d.

90.08 J

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