Dimensions of the following three quantities are the same
A
Work, energy, force
B
Velocity, momentum, impulse
C
Potential energy, kinetic energy, momentum
D
Pressure, stress, coefficient of elasticity
Medium
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D
Pressure, stress, coefficient of elasticity
d (d) [Pressure] = [Stress] = [coefficient of elasticity] = $[M{L^{ - 1}}{T^{ - 2}}]$
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The density of a cube is measured by measuring its mass and length of its sides. If the maximum error in the measurement of mass and length are $4\%$ and $3\%$ respectively, the maximum error in the measurement of density will be ........ $\%$
While measuring diameter of wire using screw gauge the following readings were noted. Main scale reading is $1 \mathrm{~mm}$ and circular scale reading is equal to $42$ divisions. Pitch of screw gauge is $1 \mathrm{~mm}$ and it has $100$ divisions on circular scale. The diameter of the wire is $\frac{x}{50} \mathrm{~mm}$. The value of $x$ is :