| List$-I$ | List$-II$ |
| $(a)$ ${R}_{{H}}$ (Rydberg constant) | $(i)$ ${kg} {m}^{-1} {s}^{-1}$ |
| $(b)$ $h$ (Planck's constant) | $(ii)$ ${kg} {m}^{2} {s}^{-1}$ |
| $(c)$ $\mu_{{B}}$ (Magnetic field energy density) | $(iii)$ ${m}^{-1}$ |
| $(d)$ $\eta$ (coefficient of viscocity) | $(iv)$ ${kg} {m}^{-1} {s}^{-2}$ |
Choose the most appropriate answer from the options given below:
| Physical Quantity | Least count of the Equipment used for measurement | Observed value |
| Mass $({M})$ | $1\; {g}$ | $2\; {kg}$ |
| Length of bar $(L)$ | $1\; {mm}$ | $1 \;{m}$ |
| Breadth of bar $(b)$ | $0.1\; {mm}$ | $4\; {cm}$ |
| Thickness of bar $(d)$ | $0.01\; {mm}$ | $0.4 \;{cm}$ |
| Depression $(\delta)$ | $0.01\; {mm}$ | $5 \;{mm}$ |
Then the fractional error in the measurement of ${Y}$ is