Physics and Measurement (NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics): Questions 58  62 of 63
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Question number: 58
» Physics and Measurement » Fundamental and Derived Units. Least Count
Question
A Vernier caliper N divisions of Vernier scale coincides with N  1 divisions of main scale (in which length of one division is 1 mm). The least count of the instrument should be
Choices
Choice (4)  Response  

a.  1 10 N 

b.  N1 

c.  N 

d.  1/N  1 

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Question number: 59
» 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 

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Question number: 60
» 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. 


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Question number: 61
» Physics and Measurement » Dimensions of Physical Quantities
Appeared in Year: 2016
Question
Planck’s constant (h), speed of light in vacuum (c) and Newton’s gravitational constant (G) are three fundamental constants. Which of the following combinations of these has dimension of length?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


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Question number: 62
» Physics and Measurement » Dimensional Analysis and Its Applications
Appeared in Year: 2017
Question
A physical quantity of the dimensions of length that can be formed out of and is [ is velocity of light, is universal constant of gravitation and is charge]:
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


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