A. 25.2N
B. 17.4N
C. 12.6N
D. 9.0N
Correct Answer:
Option B – 17.4N
Explanation
Weight of water displaced = upthrust = 30 – 21 = 9N
Mass of water displaced = 9/10 = 0.9kg
Volume of object = 9 × 10^−4m³
= (9 × 10^−4) (1.4 ×10³)
= 1.26kg = 12N
30 – 12.6 = 17.4N
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