NEET Physics: Questions 757 - 759 of 2099

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Question number: 757

» 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: 758

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

MCQ▾

Question

A solenoid has an inductance of 50 mH and a resistance of 0.025 Ω. If it is connected to a battery, how long will it take for the current to reach one half of its final equilibrium value?

Choices

Choice (4) Response
a.

1.38 sec

b.

1.38 ms

c.

0.23 sec

d.

1.34 sec

Question number: 759

» Experimental Skills » Screw Gauge

MCQ▾

Question

Choose the wrong statements about the center of mass (CM) of a system of two particles

(1) The CM lies on the line joining the two particles midway between them

(2) The CM lies on the line joining them at a point whose distance from each particle is proportional to the square of the mass of that particle

(3) The CM is on the line joining them at a point whose distance from each particle is proportional to the mass of that particle

(4) The CM lies on the line joining them at a point whose distance from each particle is inversely proportional to the mass of that particle

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 2 are correct

c.

1, 2 and 3 are correct

d.

1 and 3 are correct

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