NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 362 - 365 of 2320

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Question number: 362

» Rotational Motion » Angular Momentum

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MCQ▾

Question

A uniform heavy disc is rotating at constant angular velocity about a vertical axis through its center and perpendicular to the plane of the disc. Let L be its angular momentum. A lump of plasticize is dropped vertically on the disc and sticks to it. Which of the following will be constant?

Choices

Choice (4)Response

a.

a

b.

a and L

c.

L Only

d.

None of the above

Question number: 363

» Electrostatics » Capacitors

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Question

All six capacitors shown are identical; each can with stand maximum 200 volts between its terminals. The maximum voltage that can be safely applied between A and B is

Six capacitor - between point A and B

Six Capacitor - between Point a and B

Six identical capacitor are placed in figure between point A and B.

Choices

Choice (4)Response

a.

400V

b.

1200 V

c.

800 V

d.

200 V

Question number: 364

» Electrostatics » Electric Field

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Question

The electric intensity due to an infinite cylinder of radius R and having charge q per unit length at a distance r (r > R) from its axis is

Choices

Choice (4)Response

a.

Directly proportional to r 3

b.

Inversely proportional to r

c.

Inversely proportional to r 2

d.

Directly proportional to r 2

Question number: 365

» Laws of Motion » Force and Inertia

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Question

A cricket ball of mass 250 gm moving with a velocity of 24 m/s is hit by a bat so that it acquires a velocity of 28 m/s in the opposite direction. The force acting on the ball, if the contact time is 1/100 of a second, will be -

Choices

Choice (4)Response

a.

1.3 N in the initial direction of ball

b.

13 N in the initial direction of ball

c.

1300 N in the final direction of ball

d.

130 N in the final direction of ball

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