Out of the following four dimensional quantit | vedclass

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(D) dimensional constant is a physical quantity that has dimensions and a constant value.$1$. Acceleration due to gravity $(g)$ varies with location o

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The velocity of light in vacuum

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(D) dimensional constant is a physical quantity that has dimensions and a constant value.$1$. Acceleration due to gravity $(g)$ varies with location on the Earth's surface.$2$. Surface tension of water varies with temperature.$3$. The weight of a standard kilogram mass depends on the local gravitational field.$4$. The velocity of light in vacuum $(c)$ is a universal constant with a value of approximately $3 	imes 10^{8} \ m/s$,and it possesses dimensions of $[LT^{-1}]$.Therefore,the velocity of light in vacuum is a dimensional constant.

Out of the following four dimensional quantities,which one is called a dimensional constant?

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