NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 811 - 814 of 2320

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Question number: 811

» Laws of Motion » Force and Inertia

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MCQ▾

Question

A rope of length 15 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.

11.67 N

b.

13.33 N

c.

36.67 N

d.

Question does not provide sufficient data or is vague

Question number: 812

» Electromagnetic Induction & Alternating Currents » Peak and RMS Value of AC

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MCQ▾

Question

The resistance of a coil for dc is 5 ohm. In ac, the resistance will

Choices

Choice (4)Response

a.

Decrease

b.

Remain same

c.

Increase

d.

Be zero

Question number: 813

» Work, Energy and Power » Work Done

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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.

98.08 J

b.

90.08 J

c.

91.08 J

d.

99.72 J

Question number: 814

» Laws of Motion » Laws of Friction

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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.

3 and 4

b.

1 and 2

c.

1 and 4

d.

2 and 4

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