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NEET UG PHYSICS MCQ: UNITS & MEASUREMENTS

1 Hard

1 of 1

Analyzing +4 | -1

Velocity of sound in a medium is given by

{A^{1/2}}\,{d^{ - 1/2}}

where

d

is density of medium. Then

A

represents

View answer and explanation

Correct option: A

Elastic constant

Option A (Elastic constant) is correct because dimensional analysis shows that A has the dimensions of an elastic constant (e.g., Young's modulus).

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Statement-I: Random errors can be positive or negative.
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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