NCERT Exercise 1.12 - Units and Measurements
Question: The mass of a box measured by a grocer's balance is 2.30 kg. Two gold pieces of masses 20.15 g and 20.17 g are added to the box. What is (a) the total mass of the box, (b) the difference in the masses of the pieces to correct significant figures?
Answer: (a) Total mass = **2.34 kg**, (b) Mass difference = **0.02 g**.
Full step-by-step NCERT solution with diagrams on Something by Zero.