Assertion : If a pendulum is suspended in a lift and lift accelerates upwards, then its time period will decrease.
Reason : Effective value of g will be
`g_(e)=g+a`
A. If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
B. If both Assertion and Reason are correct but Reason is not the correct explanation of Assertion.
C. If Assertion is true but Reason is false.
D. If Assertion is false but Reason is true.
Reason : Effective value of g will be
`g_(e)=g+a`
A. If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
B. If both Assertion and Reason are correct but Reason is not the correct explanation of Assertion.
C. If Assertion is true but Reason is false.
D. If Assertion is false but Reason is true.
Correct Answer – A
(a) T=2pidqrt((l)/(g_(e))`
Here, `g_(e)=g+a` , if the lift accelerates upwards.