Question

In a spring block system if length of the spring is increased by $4\%$ , then time period

• A. increased by $2\%$ , then time period
• B. increased by $0.5\%$ , then time period
• C. decreased by $2\%$ , then time period
• D. decreased by $0.5\%$ , then time period

Answer 1

The correct option is A increased by $2\%$ , then time period

$T=2\pi \sqrt{\frac{m}{K}}\&Kl=cons\tan t$

$\therefore iflincreaseby4\%$

$\Rightarrow Kdecreaseby4\%$

$\therefore Timeincreaseby2\%$

$Hence,$

$optionAiscorrectanswer.$