An air bubble of diameter 6 mm rises steadily through a solution of density at the rate of 0.35 cm/s. The coefficient of viscosity of the solution (neglect density of air) is _______ P as (given, ). [2023]

STUDY MATERIALS
COURSES
MORE
SUCCESS STORY
ADMISSION
STORE

Back

JEE ADVANCE

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

JEE MAIN

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

NEET

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

BITSAT

CLASS XI - XII

CLASS XI - XII

CBSE BOARD

CLASS IX

CLASS X

CLASS XI

CLASS XII

CLASS VI

CLASS VII

CLASS VIII

UP BOARD

CLASS IX
CLASS X
CLASS XI
CLASS XII

CLASS IX

CLASS X

CLASS XI

CLASS XII

CUET

CRASH COURSE

CRASH COURSE

Courses

CLASSROOM COURSES
ONLINE COURSES

ONLINE COURSES

More

Solution

Q.
An air bubble of diameter 6 mm rises steadily through a solution of density $1750 {kg/m}^{3}$ at the rate of 0.35 cm/s. The coefficient of viscosity of the solution (neglect density of air) is _______ P as (given, $g = 10 {ms}^{- 2}$ ). [2023]

Ans.
(10)

Since the bubble is moving at constant speed, the force acting on it is zero.

$B = F_{v}$

$\frac{4}{3} π R^{3} ρ g = 6 π η R v$

$η = \frac{2 R^{2} ρ g}{9 v} = \frac{2 \times {(3 \times 10^{- 3})}^{2} \times 1750 \times 10}{9 \times 0.35 \times 10^{- 2}} = 10 Pas$

Want Us to Email you About Special Offers & Updates?