The liquid used in manometers should have
  • a)
    low density
  • b)
    high density
  • c)
    low surface tension
  • d)
    high surface tension
Correct answer is option 'D'. Can you explain this answer?

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Salahuddin Kv
Mar 13, 2022
Correct option is B. For the measurement to be readable reasonable, density should be high. eg mercury. If we are using water instead of mercury, then a height of 10 cm mercury column will give 1 m 36 cm in water column, which is quite large. On the other hand, surface tension has no significant effect in manometers, in fact the dia of manometers should be such that capillary effects are neglected

B) in some sources it is b.
B) in some sources it is b.