Physics and Measurement (NEST (National Entrance Screening Test) Physics): Questions 4 - 5 of 5

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Question number: 4

» Physics and Measurement » Dimensions of Physical Quantities

Appeared in Year: 2009

MCQ▾

Question

A physical quantity is expected to behave, according to theory, as , where are unknown positive constants. Measurements are made for for a number of values of , including . The best way to proceed to verify the relation and to determine and is –

Choices

Choice (4) Response

a.

To plot vs . Employ the relation for some . Take the average value of .

b.

To plot vs . Slope will give .

c.

To find for each measurement. Plot vs and fit it to a straight line. Slope of the line will give and intercept will give .

d.

To plot vs for various values of till we get a straight line graph. Then the slope of the line gives .

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Question number: 5

» Physics and Measurement » Dimensional Analysis and Its Applications

Appeared in Year: 2014

MCQ▾

Question

The dimensions of charge can be written in terms of length , energy , temperature , and permittivity of free space as . Here,

Choices

Choice (4) Response

a.

b.

c.

d.

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