Physics and Measurement (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 36 - 42 of 63

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Question number: 36

» Physics and Measurement » Accuracy and Precision of Measuring Instruments

MCQ▾

Question

The number of significant figures in all the given numbers 25.12,2009,4.156 and l. 217 x 10 - 4 is

Choices

Choice (4) Response

a.

2

b.

3

c.

4

d.

1

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Question number: 37

» Physics and Measurement » SI Units

MCQ▾

Question

10 the unit of Stefan’s constant a is

Choices

Choice (4) Response

a.

Wm 2 K -4

b.

Wm -2 K 4

c.

Wm -2 K -4

d.

Wm -2 K -1

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Question number: 38

» Physics and Measurement » Errors in Measurement

MCQ▾

Question

A physical parameter a can be determined by measuring the parameters b, c, d and e using the relation a =

If the maximum errors in the measurement of b, c, d and e are b1 %, c1 %, d1 %, and e1 %, then the maximum error in the value of a determined by the experiment is

Choices

Choice (4) Response

a.

(b 1 + c 1 - d 1 - e 1) %

b.

(b 1 + c 1 + d 1 + e 1) %

c.

(b 1 + c 1 - d 1 - e 1) %

d.

(b1 + c 1 + d1 + e1) %

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Question number: 39

» Physics and Measurement » Errors in Measurement

MCQ▾

Question

If L = 2.331 cm, B = 2.1 cm, then L + B =

Choices

Choice (4) Response

a.

4,43 cm

b.

4 cm

c.

4.431 cm

d.

4.4 cm

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Question number: 40

» Physics and Measurement » Errors in Measurement

MCQ▾

Question

In an experiment, the following observations were recorded: L = 2.820 m, M = 3.00 kg, l = 0.087 cm, Diameter D = 0.041 cm. Taking g = 9.81 m/s2 using the formula, Y =

, the maximum percentage error in Y is

Choices

Choice (4) Response

a.

6.50 %

b.

4.56 %

c.

7.96 %

d.

8.42 %

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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: 41 (1 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

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Question number: 42 (2 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

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