# NEET Physics: Questions 25 - 28 of 2142

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2142 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

## Question number: 25

MCQ▾

### Question

Error in the measurement of radius of a sphere is 1%. The error in the calculated value of its volume is

### Choices

Choice (4) Response

a.

3 %

b.

5%

c.

7%

d.

1 %

## Question number: 26

MCQ▾

### Question

A ball is dropped vertically from a height d above the ground. It hits the ground and bounces up vertically to a height d/2. Neglecting subsequent motion and air resistance, its velocity v varies with the height h above the ground is

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 27

MCQ▾

### Question

A thin copper wire of length/metre increases in length by 2 % when heated through 10°C. Which is not the percentage increase in area when a square copper sheet of length/metre is heated through 10°C?

### Choices

Choice (4) Response

a.

14%

b.

16%

c.

12%

d.

4%

## Passage

The internal radius of a 1 m long resonance tube is measured as 3 cm. A tuning fork of frequency 2000 Hz is used. The first resonating length is measured as 4.6 cm and the second resonating length is measured as 14.0 cm.

## Question number: 28 (1 of 3 Based on Passage) Show Passage

MCQ▾

### Question

Calculate the speed of sound at the room temperature.

### Choices

Choice (4) Response

a.

275 m/s

b.

330 m/s

c.

376 m/s

d.

356 m/s

f Page