JEE Main 2026 — Mechanical Properties of Fluids Question with Solution
JEE Main 2026 (02 April Shift 2)
Question
If an air bubble of diameter mm rises steadily through a liquid of density kg/m at a rate of cm/s, then the coefficient of viscosity of liquid is _______ Poise. (Take m/s)
Choose an option
Show full solutionCorrect option: B
Correct answer
B
Step-by-step explanation
The terminal velocity of an air bubble rising in a liquid is given by Stokes' law:
Where:
Rearranging the formula for the coefficient of viscosity :
Substituting the given values:
To convert the viscosity from SI units (Pas) to CGS units (Poise), we multiply by :
The closest given option is .
Answer:
Where:
Rearranging the formula for the coefficient of viscosity :
Substituting the given values:
To convert the viscosity from SI units (Pas) to CGS units (Poise), we multiply by :
The closest given option is .
Answer:
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This is a previous-year question from JEE Main 2026, covering the Mechanical Properties of Fluids chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.