# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 380 - 383 of 2184

Access detailed explanations (illustrated with images and videos) to 2184 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. Subscription can be renewed yearly absolutely FREE! View Sample Explanation or View Features.

Rs. 550.00 or

How to register?

## Question number: 380

Edit
MCQ▾

### Question

If identical charges (-q) are placed at each corner of a cube of side b , then electric potential energy of charge (+q) which is placed at center of the cube will be

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 381

Edit
MCQ▾

### Question

What is the function of a screw gauge in the experiment of determining Young’s modulus of a wire?

### Choices

Choice (4) Response

a.

It measures the diameter of the wire.

b.

It measures the extension in the wire.

c.

It measures the length of the wire.

d.

## Question number: 382

Edit
MCQ▾

### Question

Figure given below shows two identical parallel plate capacitors connected to a battery with switch S closed. The switch is now opened and the free space between the plates of capacitors is filled with a dielectric of dielectric constant 3. What will be the ratio of total electrostatic energy stored in both capacitors before and after the introduction of the dielectric? Circuit Diagram - Two Identical Parallel Plate Capacitors Two identical parallel plate capacitors connected to a battery with switch S closed.

### Choices

Choice (4) Response

a.

3: 5

b.

3: 1

c.

5: 3

d.

5: 1

## Question number: 383

Edit
MCQ▾

### Question

A boat of mass 1000 kg is moving with a velocity of 5 m/s. A person of mass 60 kg jumps into the boat. The velocity of the boat with the person will be –

### Choices

Choice (4) Response

a.

4.71 cm/s

b.

47.1 m/s

c.

4.71 m/s

d.

47.1 cm/s