The dimensions of Planck's constant and angular momentum are respectively
A$M{L^2}{T^{ - 1}}$ and $ML{T^{ - 1}}$
B$M{L^2}{T^{ - 1}}$ and $M{L^2}{T^{ - 1}}$
C$ML{T^{ - 1}}$ and $M{L^2}{T^{ - 1}}$
D$ML{T^{ - 1}}$ and $M{L^2}{T^{ - 2}}$
Medium
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B$M{L^2}{T^{ - 1}}$ and $M{L^2}{T^{ - 1}}$
b (b)
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In an experiment with Vernier callipers of least count $0.1\,mm$, when two jaws are joined together the zero of Vernier scale lies right to the zero of the main scale and $6^{\text {th }}$ division of Vernier scale coincides with the main scale division. While measuring the diameter of a spherical bob, the zero of vernier scale lies in between $3.2\,cm$ and $3.3\,cm$ marks, and $4^{\text {th }}$ division of vernier scale coincides with the main scale division. The diameter of bob is measured as $.......\,cm$
The dimensions of a cone are measured using a scale with a least count of $2 mm$. The diameter of the base and the height are both measured to be $20.0 cm$. The maximum percentage error in the determination of the volume is. . . . .
Two resistance are measured in $Ohm$ and is given as
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A travelling microscope is used to determine the refractive index of a glass slab. If $40$ divisions are there in $1 \; cm$ on main scale and $50$ Vernier scale divisions are equal to $49$ main scale divisions, then least count of the travelling microscope is $\dots \; \times 10^{-6} \; m$