The density of water in F.P.S system is
Correct answer: D. 50lb/ft3
- A. 50lb/ft2
- B. 50ft/lb
- C. 50ft/lb3
- D. 50lb/ft3
Explanation
In the F.P.S. (Foot-Pound-Second) system, the density of water is commonly expressed in pounds per cubic foot (lb/ft3).
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Light is studied through reflection, refraction, dispersion, interference, diffraction and polarization, linking ray behavior with its wave nature. Questions may involve mirrors, lenses, optical instruments, refractive index and image formation, while geometrical optics deals with rays and wave optics explains effects such as interference and diffraction.
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