Answer
(a) The resulting period of oscillation is greater than 'T'.
(b) III
Work Step by Step
(a) The resulting period of oscillation is greater than 'T' because we know that the longer the spring is, the more time it takes to complete the oscillation.
(b) We know that the correct option is (III) -- that is, the longer spring stretches more easily, and hence takes longer to complete an oscillation.
