CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
Question

A mercury barometer has a column height of 76 cm. What will be the height of the column if the mercury is replaced with an oil having a density of 760 kg m3? (Density of mercury is 13600 kg m3)​

A
13.6 m
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
27.2 m
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
76 cm
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
23.8 m
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A 13.6 m
  • Liquid in barometer exert pressure on its base equal to the atmospheric pressure.​

  • If the density of the liquid is low, more height will be required to maintain the same pressure.​

  • So, from the formula h=Pρg (from P=ρgh) we can find height ‘h’ if density ‘ρ’ is changed, for given atmospheric pressure P.​


flag
Suggest Corrections
thumbs-up
5
BNAT
mid-banner-image