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NEET UG PHYSICS MCQ: UNITS & MEASUREMENTS

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Analyzing +4 | -1

You may not know integration. But using dimensional analysis you can check or prove results. In the integral

\int \frac{d x}{\left(2 {ax}-x^2\right)^{1 / 2}}=a^n \sin ^{-1}\left(\frac{x}{a}-1\right)

the value of

n

should be-

View answer and explanation

Correct option: A

0

Option A (0) is correct because the argument of the inverse sine function must be dimensionless, and dimensional analysis shows that n must be zero.

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Statement-II: Cause of random errors are uncertain. An object is moving through the liquid. The viscous damping force acting on it is proportional to the velocity. Then dimension of constant of proportionality is The error due to parallax is a: 2.34 is obtained by rounding of the number The dimensional formula of self-inductance is The dimension of

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