NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 849 - 852 of 2142

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Question number: 849

» Laws of Motion » Force and Inertia

MCQ▾

Question

A rope of length 25 m and linear density 2 kg/m is lying length wise on a horizontal smooth table. It is pulled by a force of 25 N. The tension in the rope at the point 7 m away from the point of application, will be –

Choices

Choice (4) Response

a.

11 N

b.

36 N

c.

18 N

d.

All of the above

Question number: 850

» Laws of Motion » Laws of Friction

MCQ▾

Question

Choose the correct statements -

(1) Kinetic friction is lesser than limiting friction.

(2) In rolling the surfaces at contact do not rub each other.

(3) If a body is at rest and no pulling force is acting on it, force of friction on it is zero.

(4) Kinetic friction is greater than limiting friction.

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

Choices

Choice (4) Response

a.

1 and 3 are correct

b.

1, 2 and 3 are correct

c.

2 and 4 are correct

d.

1 and 2 are correct

Question number: 851

» 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.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 852

» Laws of Motion » Force and Inertia

MCQ▾

Question

Choose the correct options -

(1) Inertia. mass (2) 1 newton = 10 5 dyne

(3) Thrust on rocket f = ∆M/∆t v - Mg

(4) Apparent weight of a body in the accelerated lift is W = m (g + a). …, . ,

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

Choices

Choice (4) Response

a.

2 and 4 are correct

b.

1 and 3 are correct

c.

1, 2 and 3 are correct

d.

1 and 2 are correct

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