NEET2008PhysicsUnits and DimensionsActual
Assertion: In the relation (f= 1 2 l T ), where symbols have standard meaning, ( ) represent linear mass density. Reason : The frequency has the dimensions of inverse of time.
Options
- AIf both assertion and reason are true and reason is the correct explanation of assertion
- BIf both assertion and reason are true but reason is not the correct explanation of assertion
- CIf assertion is true but reason is false
- DIf both assertion and reason are false.
Correct answer
B. If both assertion and reason are true but reason is not the correct explanation of assertion
Step-by-step solution
From, f= 1 2 l T , f^2= T 4 l^2 or, aligned & = T 4 l^2 f^2 = [ MLT ⁻² ] L ^2 ~T ⁻² = M L & = Mass length = linear mass density. aligned