JEE PYQ: Oscillations Question 17
Question 17 - 2021 (26 Feb 2021 Shift 1)
If two similar springs each of spring constant $K_1$ are joined in series, the new spring constant and time period would be changed by a factor:
(1) $\frac{1}{2},, \sqrt{2}$
(2) $\frac{1}{4},, 2\sqrt{2}$
(3) $\frac{1}{2},, 2\sqrt{2}$
(4) $\frac{1}{4},, \sqrt{2}$
Show Answer
Answer: (1)
Solution
Series: $K_{eq} = K_1/2$. $T’ = \sqrt{2},T$.