Question:

4.A soap bubble in vacuum has a radius of 3 cm and another soap bubble in vacuum has a radius of 4 cm. If the two bubbles coalesce under isothermal condition, then the radius of the new bubble is

Options :

  • a) 2.3 cm
  • b) 4.5 cm
  • c) 5 cm
  • d) 7 cm

Answer :

c) 5 cm

Answer Steps :

Solution :-

Step1 :-

Step2 :-

Video Tutorial