Physics and Measurement-Accuracy and Precision of Measuring Instruments (NEET Physics): Questions 1 - 4 of 4

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Question number: 1

» Physics and Measurement » Accuracy and Precision of Measuring Instruments

MCQ▾

Question

A wire has a mass 0.3 + 0.003g, radius 0.5 + 0.005 mm and length 6 + 0.06 cm. The maximum percentage error in the measurement of its density is

Choices

Choice (4) Response
a.

1

b.

4

c.

2

d.

3

Question number: 2

» 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

Question number: 3

» Physics and Measurement » Accuracy and Precision of Measuring Instruments

MCQ▾

Question

A student performs an experiment for determination of g=(4π2lT2) . The error in length is ∆ and in time T is ∆ T and n is number of times the reading is taken. The measurement of g is most accurate for

Choices

Choice (4) Response
a.

∆l = 5mn, ∆ T = 0.2 sec, n = 10

b.

∆l = 5mn, ∆T = 0.2 sec, n = 20

c.

∆l = 5mn, ∆T = 0.1 sec, n = 10

d.

∆l = 1mn, ∆T = 0.1 sec, n = 50

Question number: 4

» Physics and Measurement » Accuracy and Precision of Measuring Instruments

MCQ▾

Question

If h be the elevation or depression of a spherical surface from the plane glass plate and o be the mean distance between two consecutive points corresponding to the impressions made by the three legs of a spherometer then the radius of curvature is

Choices

Choice (4) Response
a.

l26h+h2

b.

l26h+2h

c.

l26h+h22

d.

l26hh2

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