Which of the following is an SI derived unit named after a scientist?
A. Kilogram
B. Metre
C. Second
D. Pascal
Answer: Option D
Solution (By JKSSB Mock Tests)
Pascal (Pa) named after Blaise Pascal, derived unit for pressure (N/m²). Metre, kilogram, second are base units. Joule, watt, newton, hertz, coulomb also named scientists.
Explanation:
Magnetic field intensity (H) and magnetic field (B) are vectors. Magnetic flux is scalar (Φ = B·A). Resistance scalar, potential scalar. Vector quantities have direction. Current has direction but adds by scalar law, considered tensor sometimes but in basic physics not vector.
Explanation:
Gravity, electrostatic, magnetic forces act without direct contact. Friction, tension, normal require contact. Field forces are non-contact.
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