Mercury is often used in barometer because

  • AIt is the best liquid
  • BThe height of barometer will be less
  • CIts vapour pressure is so low that it may be neglected
  • DBoth (B) and (C)
Correct Answer : (D)

Both (B) and (C)

Hints :

According to Bernoulli's equation for steady ideal fluid flow


A Francis turbine is used when the available head of water is

Join The Discussion