1.  The weight of a 13 m long iron rod is 23.4 kg. The weight of 6 m long of such rod will be?
A. 7.2 kg
B. 12.4 kg
C. 10.8 kg
D. 18 kg

Answer: Option C

Explanation:

Less length, less weight
From question, 13 : 6 : : 23.4 : W
⇒ 13 x W = 6 x 23.4
∴ W = (6 x 23.4) /13 = 10.8 kg