JEE Advanced 2020 Full Test 5 Paper 1

A container filled with air under pressure P0 contains a soap bubble of radius R. The air pressure has been reduced to half isothermally and the new radius of the bubble becomes ‌

5R

4

. If the surface tension of the soap water solution is S,P0 is found to be ‌

16nS

R

SI unit. Find n.