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Longitudinal Strain

If we change ...

Question

If we change the system of units, i.e., if we pick new units for physical quantities, then which of the following quantity's numerical value will not change?

A

Strain

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B

Force

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C

accelration

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D

velocity

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Solution

The correct option is A Strain
Strain is dimensionless; hence, its numerical value is independent of units.

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Q. Assertion :When we change the unit of measurement of a quantity, its numerical value changes Reason: Smaller the unit of measurement smaller is its numerical value

Q. Assertion :When we change the unit of measurement of a quantity, its numerical value changes. Reason: Smaller the unit of measurement smaller is its numerical value.

Q. Assertion :Whenever we change the unit of measurement of a quantity, its numerical value changes.
Reason: Smaller the unit of measurement, smaller is its numerical value.

Q. A: When we change the unit of measurement of a quantity, its numerical value changes.
R: Smaller the unit of measurement, smaller is its numerical value.

u_{1}

u_{2}

are the units selected in two systems of unit of any physical quantity and

n_{1}

n_{2}

are their numerical values then

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