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NEET UG PHYSICS MCQ: UNITS & MEASUREMENTS
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A gas bubble from an explosion under water oscillates with a time period T, depends upon static pressure p, density of water and the total energy of explosion E. Find the expression for the time period T.(where, k is a dimensionless constant)
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Correct option: A
Option A () is correct because dimensional analysis confirms that the dimensions of this expression match the dimensions of time.
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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 is that of
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