Question

A body weighs 8 gm, when placed in one pan and 18gm, when placed in the other pan of a false balance. If the beam is horizontal (when both the pans are empty), the true weight of the body is

• A. 13 gm
• B. 12 gm
• C. 15.5 gm
• D. 15 gm

Answer 1

Answer: (B)

12 gm

Answer 2

For given condition true weight = $\sqrt{W_{1}W_{2}} = \sqrt{8 \times 18}$=12 gm.