# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 373 - 376 of 2320

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## Question number: 373

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MCQ▾

### Question

In a hydrogen atom, the electron revolves around the nucleus in an orbit of radius 0.53 x 10 -10 m. Then the electrical potential produced by the nucleus at the position of the electron is

### Choices

Choice (4)Response

a.

-27.2V

b.

27.2V

c.

13.6V

d.

-13.6V

## Question number: 374

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MCQ▾

### Question

A string of length 1 m is fixed at one end and carries a mass of 100 gm at the other end. The string makes 2/jt revolutions per second about a vertical axis through the fixed end. The angle of inclination of the string with the vertical, and the linear velocity of the mass will respectively be - (in M. K. S. system)

### Choices

Choice (4)Response

a.

50°14′, 3.16

b.

52°14′, 3.16

c.

50°14′, 1.6

d.

52°14′, 1.6

## Question number: 375

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MCQ▾

### Question

A parallel plate capacitor is charged and the charging battery is then disconnected. If the plates of the capacitor are moved further apart by means of insulating handles, then

### Choices

Choice (4)Response

a.

The capacitance increases

b.

The charge on the capacitor increases

c.

The voltage across the plates decreases

d.

The electrostatic energy stored in the capacitor increases

## Question number: 376

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MCQ▾

### Question

A force of ( ) N acted on a body of mass 10 kg. The displacement after 10 sec, if it starts from rest, will be -

### Choices

Choice (4)Response

a.

70 m along with x axis

b.

10 m along with x axis

c.

50 m along with x axis

d.

All of the above

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