Answer:
Deflection between the two nanometers is1.020m
Explanation:
Let ha be for the first manometer=90kpa
Let hb be for the second manometer=100kpa
1000×9.8=9800
Delta(ha)-delta(hb)=(1-0.9)×patm/9800patm
100kpa=100000pa
Therefore
(1 -0.9)×100,000/9800 =0.1×10.204=1.020m