# Physics and Measurement-Errors in Measurement (NEET Physics): Questions 23 - 28 of 29

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## Passage

The internal radius of a 1 m long resonance tube is measured as 3 cm. A tuning fork of frequency 3500Hz is used. The first resonating length is measured as 14.6 cm and the second resonating length is measured as 24.0 cm.

## Question number: 23 (1 of 2 Based on Passage) Show Passage

» Physics and Measurement » Errors in Measurement

MCQ▾

### Question

Calculate the speed of sound at the room temperature

### Choices

Choice (4) Response

a.

276 m/s

b.

675 m/s

c.

930 m/s

d.

658 m/s

## Question number: 24 (2 of 2 Based on Passage) Show Passage

» Physics and Measurement » Errors in Measurement

MCQ▾

### Question

Calculate the end correction.

### Choices

Choice (4) Response

a.

9.9 cm

b.

9.2 cm

c.

9.1 cm

d.

9.4 cm

## Question number: 25

» Physics and Measurement » Errors in Measurement

Assertion-Reason▾

### Assertion (Ꭺ)

Number of significant figures in 0.005 is one and that in 0.500 is three.

### Reason (Ꭱ)

This is because zero is not significant.

### Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Both Ꭺ and Ꭱ are false

c.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

d.

Ꭺ is true but Ꭱ is false

## Question number: 26

» Physics and Measurement » Errors in Measurement

MCQ▾

### Question

If there is a positive error of 50 % in the measurement of velocity of a body, then the error in the measurement of kinetic energy is

### Choices

Choice (4) Response

a.

25%

b.

50%

c.

125%

d.

75%

## Question number: 27

» Physics and Measurement » Errors in Measurement

MCQ▾

### Question

The unit of percentage error is

### Choices

Choice (4) Response

a.

Errors have got their own units which are different from that of physical quantity measured

b.

Different from that of physical quantity

c.

Percentage error is unitless

d.

Same as that of physical quantity

## Question number: 28

» Physics and Measurement » Errors in Measurement

MCQ▾

### Question

The mean time period of second’s pendulum is 2.00s and means absolute error in the time period is 0.05s. To express maximum estimate of error, the time period should be written as

### Choices

Choice (4) Response

a.

(2.00 + 0.025) s

b.

(2.00 + 0.05) s

c.

(2.00 - 0.01) s

d.

None of the above

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