Assertion: In the measurement of physical qua | vedclass

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Question

(B) The $Assertion$ is correct because physical quantities can be measured directly (e.g.,using a meter scale) or indirectly (e.g.,using parallax meth

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If both $Assertion$ and $Reason$ are correct but $Reason$ is not a correct explanation of the $Assertion$.

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(B) The $Assertion$ is correct because physical quantities can be measured directly (e.g.,using a meter scale) or indirectly (e.g.,using parallax method for distance of stars).The $Reason$ is also correct because the reliability of any measurement depends on the precision and accuracy of the instrument used,and the final result must account for the associated uncertainties or errors.However,the $Reason$ does not explain why we use direct or indirect methods; it explains the criteria for reporting a measurement. Therefore,the $Reason$ is not the correct explanation of the $Assertion$.

List $I$	List $II$
$A$. Torque	$I$. $[M^1 L^1 T^{-2} A^{-2}]$
$B$. Magnetic field	$II$. $[L^2 A^1]$
$C$. Magnetic moment	$III$. $[M^1 T^{-2} A^{-1}]$
$D$. Permeability of free space	$IV$. $[M^1 L^2 T^{-2}]$

$Assertion$: In the measurement of physical quantities,direct and indirect methods are used.
$Reason$: The accuracy and precision of measuring instruments,along with errors in measurements,should be taken into account while expressing the result.

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Which of the following does not have the same unit as the others?

Match List $I$ with List $II$:

List $I$ List $II$

$A$. Torque $I$. $[M^1 L^1 T^{-2} A^{-2}]$

$B$. Magnetic field $II$. $[L^2 A^1]$

$C$. Magnetic moment $III$. $[M^1 T^{-2} A^{-1}]$

$D$. Permeability of free space $IV$. $[M^1 L^2 T^{-2}]$

Choose the correct answer from the options given below:

State,for each of the following physical quantities,if it is a scalar or a vector: volume,mass,speed,acceleration,density,number of moles,velocity,angular frequency,displacement,angular velocity.

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$Assertion$: In the measurement of physical quantities,direct and indirect methods are used.$Reason$: The accuracy and precision of measuring instruments,along with errors in measurements,should be taken into account while expressing the result.