# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 371 - 374 of 2320

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## Question number: 371

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MCQ▾

### Question

A proton moves a distance d in a uniform electric field if as shown in the figure. Then which of the following statements are correct? Proton and Its DirectionA proton moves a distance d in a uniform electric field is shown in figure
1. Electric field do a negative work on the proton
2. Electric potential energy of the proton increases
3. Electric field do a positive work on the proton
4. Electric potential energy of the proton decreases

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

### Choices

Choice (4)Response

a.

1,2 and 3

b.

1 and 4

c.

1 and 3

d.

1 and 2

## Question number: 372

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MCQ▾

### Question

Which principle is involved in the experiment to determine the specific heat of a liquid by the method of mixture?

### Choices

Choice (4)Response

a.

Heat gained by solid and calorimeter = Heat lost by liquid.

b.

Heat lost by solid and liquid = Heat gained by calorimeter.

c.

Heat gained by solid = Heat lost by calorimeter and liquid.

d.

Heat lost by solid = Heat gained by calorimeter and liquid.

## 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

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