| $A$. Unified interaction reducing the number of fundamental forces from four to three | $(i)$ Strong interaction |
| $B$. Force between two molecules separated by a distance near about the sum of the molecular radii | $(ii)$ Gravitational force |
| $C$. Nuclear binding force | $(iii)$ Electroweak interaction |
| $D$. Bodies of astronomical proportions | $(iv)$ Electromagnetic interaction |
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| Column-$I$ | Column-$II$ |
|---|---|
| $(a)$ Ratio of change in time period of a simple pendulum with temperature to its original time period | $(i) \, \alpha \Delta T$ |
| $(b)$ Ratio of the value of a length to its scale reading | $(ii) \, T$ |
| $(c)$ Reciprocal of coefficient of volume expansion for an ideal gas of constant pressure | $(iii) \, (1 + \alpha \Delta T)$ |
| $(d) \, \frac{F}{YA} =$ | $(iv) \, \frac{1}{2} \alpha \Delta T$ |
| List-$I$ | List-$II$ |
| $(A)$ Mass density | $(I)$ $[ML^2T^{-3}]$ |
| $(B)$ Impulse | $(II)$ $[MLT^{-1}]$ |
| $(C)$ Power | $(III)$ $[ML^2T^0]$ |
| $(D)$ Moment of inertia | $(IV)$ $[ML^{-3}T^0]$ |
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