Which one among the following is not a unit of weight?

Correct option is D

Dyne is a unit of force in the CGS system, not weight.

Explanation:
● Dyne is defined as the force required to accelerate a 1-gram mass by 1 cm/s².
● Weight is the force due to gravity acting on a mass.
● Common units of weight include kilograms, grams, and pounds.
● The SI unit of force, the Newton, is more commonly used today.

Information Booster:
● 1 dyne = 10−510^{-5}10^-5 Newtons.
● Weight is calculated as $W=m\times g$, where ggg is the acceleration due to gravity.
● Dyne belongs to the CGS (centimeter-gram-second) system, replaced by the SI system in most applications.
● The pound is widely used in the imperial system to measure weight.
● Accurate weight measurement is crucial in industries like aviation and healthcare.

Additional Information:

• (A) Pound: A common unit of weight in the imperial system.
• (B) Kilogram: The standard SI unit of mass often used interchangeably with weight.
• (C) Gram: A smaller unit of mass in the metric system.