Question

Which one of the following statements is truc?
(a) A scalar quantity is the one that is conserved in a process.
(b) A scalar quantity is the one that can never take negative values
(c) A scalar quantity is the one that does not vary from one point to another in space.
(d) A scalar quantity has the same value for observers with different orientations of the axes,​

Answer 1

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option (B) is correct

Answer 2

$\huge \red{\sf Answer :}$

(a) False, because several scalar quantities do not remain conserve in a process. For example, energy being a scalar quantity is not conserved in an inelastic collision.

(b) False, because few scalar quantities can take negative values. For example, temperature being a scalar quantity can take negative values such as -10°C, -33°C etc.

(c) False, because several scalar quantities have dimensions. For example, mass, density, speed and pressure etc. all have dimensions.

(d) False, because few scalar quantities vary from one point to another point in space. For example, density, temperature, charge density etc. vary from one point to another point in space.

(e) True, as orientation of axes does not change the value of a scalar quantity. For example, mass, density etc. are independent of the orientation of axes.