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Class 11 NEET Physics Physical World, Units and Measurements

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Question : 1

Total: 70

A balloon is made of a material of surface tension S and its inflation outlet (from where gas is filled in it) has small area A. It is filled with a gas of density ρ and takes a spherical shape of radius R. When the gas is allowed to flow freely out of it, its radius r changes from R to 0 (zero) in time T. If the speed v(r) of gas coming out of the balloon depends on r as rα and T∝SαAβργRδ then

a=−‌
1
2
,α=−‌
1
2
,β=−1,γ=‌
1
2
,δ=‌
7
2
a=‌
1
2
,α=‌
1
2
,β=−‌
1
2
,γ=‌
1
2
,δ=‌
7
2
a=‌
1
2
,α=‌
1
2
,β=−1,γ=+1,δ=‌
3
2
a=−‌
1
2
,α=−‌
1
2
,β=−1,γ=−‌
1
2
,δ=‌
5
2

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