AIIMS2018PhysicsMathematics in Physics
The mass of a box measured by a grocer's balance is 2.3 ~kg . Two gold pieces of masses 20.15 ~g and 20.17 ~g are added to the box. What is the total mass of the box and the difference in the masses of the pieces to correct significant figures?
Options
- A2.34 ~kg , 0 ~g
- B2.3 ~kg , 0.02 ~g
- C2.34 ~kg , 0.02 ~g
- D2.3 ~kg , 0 ~g
Correct answer
B. 2.3 ~kg , 0.02 ~g
Step-by-step solution
aligned Total mass = & 2.3 ~kg +0.02015 ~kg & +0.02017 ~kg = & 2.34032 ~kg =2.3 ~kg aligned Difference of mass of the gold pieces =20.17 ~g -20.15 ~g =0.02 ~g