Physics and MeasurementAccuracy and Precision of Measuring Instruments (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 1  4 of 4
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Question number: 1
» Physics and Measurement » Accuracy and Precision of Measuring Instruments
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
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
Question
A student performs an experiment for determination of . 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
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. 


b. 


c. 


d. 

