Q1.A spring has a certain mass suspended from it and its period for vertical oscillations is T1 . The spring is now cut into two equal halves and the same mass is suspended from one of the halves. The period of vertical oscillations is now T2 .The ratio of T1/ T2 is
Answer : Option DExplaination / Solution: No Explaination.
Q2.A simple spring has length l and force constant K. It is cut into two springs of lengths l1 and l2 such that l1 =n. l2(where n is an integer), the force constant of the spring of length l2 is
Answer : Option CExplaination / Solution: No Explaination.
Q4.Two pendulums of length I meter and 16 meters start vibrating one behind the other from the same stand. At some instant the two are in the mean position in the same phase. The time period of shorter pendulum is T. The minimum time after which the two threads of the pendulums will be one behind the other is
Answer : Option CExplaination / Solution: No Explaination.
Q7.A mass M is suspended from a spring of negligible mass. The spring is pulled a little and then released so that the mass executes simple harmonic oscillations with a time period T.
Answer : Option DExplaination / Solution: No Explaination.
Q8.The bob of a simple pendulum has a mass of 20 g. The period of oscillations of the pendulum is 0.75 s. When the mass of bob is increased to 40 g, without any other change, the time period now becomes
Answer : Option DExplaination / Solution: No Explaination.
Q9.A pendulum suspended from a ceiling of a train has a period T when the train is at rest. When the train is accelerating with a uniform acceleration α, the period of oscillation will
Answer : Option BExplaination / Solution: No Explaination.