$(A)$ Error $\Delta T$ in measuring $T$, the time period, is $0.05$ seconds
$(B)$ Error $\Delta \mathrm{T}$ in measuring $\mathrm{T}$, the time period, is $1$ second
$(C)$ Percentage error in the determination of $g$ is $5 \%$
$(D)$ Percentage error in the determination of $g$ is $2.5 \%$
($A$) The error in the measurement of $r$ is $10 \%$
($B$) The error in the measurement of $T$ is $3.57 \%$
($C$) The error in the measurement of $T$ is $2 \%$
($D$) The error in the determined value of $g$ is $11 \%$
| List - $I$ $(Number)$ | $List - II$ $(Significant figure)$ |
| $(A)$ $1001$ | $(I)$ $3$ |
| $(B)$ $010.1$ | $(II)$ $4$ |
| $(C)$ $100.100$ | $(III)$ $5$ |
| $(D)$ $0.0010010$ | $(IV)$ $6$ |
Choose the correct answer from the options given below :
$(1) $ energy density
$(2)$ refractive index
$(3) $ dielectric constant
$(4) $ Young's modulus
$(5)$ magnetic field