• SI Units of Fundamental Physical Quantities:
• Entropy ($S = \frac{dQ}{T}$): Unit is $\text{J}\cdot\text{K}^{-1}$ $\rightarrow$ (I)
• Free Energy ($G = H - TS$): Unit is Joules ($\text{J} = \text{kg}\cdot\text{m}^2\cdot\text{s}^{-2}$) $\rightarrow$ (II)
• Force ($F = m a$): Unit is Newtons ($\text{N} = \text{kg}\cdot\text{m}\cdot\text{s}^{-2}$) $\rightarrow$ (III)
• Momentum ($p = m v$): Unit is $\text{kg}\cdot\text{m}\cdot\text{s}^{-1}$ $\rightarrow$ (IV)
• Systematic Match: (A)-(I), (B)-(II), (C)-(III), (D)-(IV) corresponds to Option 1.

Correct option: (1) (A) - (1), (B)- (IN), (C) - (IY), (D) - (HN)

• Conditions for Sustained Light Interference:
• The two interfering light waves must originate from mutually coherent sources maintaining identical frequency and constant initial phase difference.
• The amplitudes of the two interfering waves should ideally be equal or nearly equal to achieve complete destructive interference (maximum fringe contrast).
• The path difference between the interfering rays must be very small.
• Conclusion: Statements (A), (B), and (C) only are necessary conditions for sustained visible interference fringes. (Correct answer: Option 3)

• Diffraction of Light:
• The phenomenon of light waves bending around the sharp edges of obstacles or apertures and spreading into the geometrical shadow zone.
• Occurs when the dimensions of the obstacle or aperture are comparable to the wavelength of light. (Correct answer: Option 3)