Question

A scalar quantity (a) can never have negative values (b) must be dimensionless (c) has magnitude and direction and it can be added algebraically to another scalar of the same type (d) does not vary from point to point in space

Answer 1

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A scalar quantity can never have negative values. So 1st option is correct.

$\longrightarrow$for eg. :- Distance amd time are scalar quantity. Distance can never be negative and also time can never be negative.

Scalar quantity are not dimensionless quantities.

$\longrightarrow$For eg. :- Dimension of Distance is L. So 2nd option is incorrect.

Scalar quantity needs only magnitude and not direction and they follow algebraic rules for addition. So 3rd option is also incorrect.

Scalar quantity varies from point to point. So option 4 is also incorrect.

$\longrightarrow$ For eg. :- Distance and time changes at different point.

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Answer 2

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A scalar quantity can never have negative values. So 1st option is correct.

\longrightarrow⟶ for eg. :- Distance amd time are scalar quantity. Distance can never be negative and also time can never be negative.

Scalar quantity are not dimensionless quantities.

\longrightarrow⟶ For eg. :- Dimension of Distance is L. So 2nd option is incorrect.

Scalar quantity needs only magnitude and not direction and they follow algebraic rules for addition. So 3rd option is also incorrect.

Scalar quantity varies from point to point. So option 4 is also incorrect.

\longrightarrow⟶ For eg. :- Distance and time changes at different point.