The quantities which have the same dimensions | vedclass

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(D) The solid angle is defined as $d\Omega = \frac{dA}{r^2}$. Since it is the ratio of area to the square of distance,its dimensions are $[M^0 L^0 T^0

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strain and angle

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(D) The solid angle is defined as $d\Omega = \frac{dA}{r^2}$. Since it is the ratio of area to the square of distance,its dimensions are $[M^0 L^0 T^0]$,making it a dimensionless quantity.Strain is defined as the ratio of change in length to original length,$	ext{Strain} = \frac{\Delta l}{l}$,which is also dimensionless $[M^0 L^0 T^0]$.An angle $	heta = \frac{l}{r}$ is the ratio of arc length to radius,which is also dimensionless $[M^0 L^0 T^0]$.Therefore,both strain and angle have the same dimensions as a solid angle.

The quantities which have the same dimensions as those of solid angle are:

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