Given below are two statements: One is labelled as Assertion (A) and other is labelled as Reason (R) Assertion (A) : Time period of oscillation of a…
JEE Main 2022 — Physics Mechanics
2022mcqeasy
Given below are two statements: One is labelled as Assertion (A) and other is labelled as Reason (R)
Assertion (A) : Time period of oscillation of a liquid drop depends on surface tension (S), if density of the liquid is ρ and radius of the drop is r, then T=KS23ρr3 is dimensionally correct, where K is dimensionless.
Reason (R) : Using dimensional analysis we get R.H.S. having different dimension than that of time period. In the light of above statements, choose the correct answer from the options given below.
Official previous-year question
Held on 29 Jul 2022 · Verified 6 Jul 2026.
Options
A
Both (A) and (R) are true and (R) is the correct explanation of (A)
B
Both (A) and (R) are true but (R) is not the correct explanation of (A)
C
(A) is true but (R) is false
D
(A) is false but (R) is true
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Solution
Using dimensional analysis for the given equation,