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Bernoulli’s equation is given by
Where pressure, density, speed, height of the liquid column, acceleration due to gravity and is constant. The dimensional formula for is same as that for :
(a)Velocity gradient
(b)Pressure gradient
(c)Modulus of elasticity
(d)Thrust

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Important Questions on Physical World and Measurement
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The period of oscillation of a simple pendulum in the experiment is recorded as , , , and , respectively. The average absolute error is

MEDIUM
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The length, breadth and thickness of a strip are , and , respectively, then the most probable error in its volume will be

EASY
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The length of a cylinder is measured with a meter rod having least count . Its diameter is measured with vernier calipers having least count . If the length and diameter of the cylinder are and , respectively, then the percentage error in the calculated value of volume will be

HARD
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IMPORTANT
If energy , velocity and time were chosen as fundamental physical quantities for measurement, then the dimensional formula for mass will be :-

HARD
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Which of the following represents the dimensions of capacitance ?

HARD
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The dimensional formula for magnetic flux is ( represents coulomb)

HARD
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IMPORTANT
Which of the following does not have the same unit as others ?

EASY
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IMPORTANT
Suppose the refractive index is given as :, where and are constants and is wavelength, then dimensions of are same as that of :
