Physics and Measurement (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 12 - 19 of 63

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Question number: 12

» Physics and Measurement » Errors in Measurement

MCQ▾

Question

Error in the measurement of radius of a cylinder is 4%. The error in the calculated value of its volume is

Choices

Choice (4) Response

a.

8%

b.

5%

c.

3%

d.

7%

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Question number: 13

» Physics and Measurement » Errors in Measurement

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 %

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Question number: 14

» Physics and Measurement » Errors in Measurement

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%

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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 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: 15 (1 of 3 Based on Passage) Show Passage

» Physics and Measurement » Errors in Measurement

MCQ▾

Question

Calculate the maximum percentage error in measurement of e.

Choices

Choice (4) Response

a.

3.33%

b.

4.33%

c.

2.23%

d.

5.33%

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Question number: 16 (2 of 3 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.

275 m/s

b.

330 m/s

c.

376 m/s

d.

356 m/s

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Question number: 17 (3 of 3 Based on Passage) Show Passage

» Physics and Measurement » Errors in Measurement

MCQ▾

Question

Calculate the end correction.

Choices

Choice (4) Response

a.

0.3 cm

b.

0.4 cm

c.

0.2 cm

d.

0.1 cm

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Question number: 18

» Physics and Measurement » Dimensions of Physical Quantities

MCQ▾

Question

In the relation , P is pressure, Z is the distance, k is Boltzmann constant and θ is the temperature. The dimensional formula of β will be

Choices

Choice (4) Response

a.

[M 0 L 2 T -1]

b.

[M 1 L 2 T 1]

c.

[M 1 L 0 T -1]

d.

[M 0 L 2 T 0]

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Question number: 19

» Physics and Measurement » Technology and Society

Assertion-Reason▾

Question

Assertion (Ꭺ)

Parallax method cannot be used for measuring distances of stars more than 100 light years away.

Reason (Ꭱ)

Because parallax angle reduces so much that it cannot be measured accurately.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are false

b.

Ꭺ is false but Ꭱ is true

c.

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

d.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

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