A particle performs simple harmonic motion from mean position, with period 8 \mathrm{~s}. The distance travelled by it between 1 st and 2 nd second of its motion is (A = amplitude of S. H. M.)
A. A \frac{1}{2}
B. A\left(\frac{1}{\sqrt{2}}-1\right)
C. A\left(1-\frac{1}{\sqrt{2}}\right)
D. A\left(\frac{1}{\sqrt{2}}\right)
A particle performs simple harmonic motion from mean position, with period 8 \mathrm{~s}. The distance travelled by it between 1 st and 2 nd second of its motion is (A = amplitude of S. H. M.)
A. A \frac{1}{2}
B. A\left(\frac{1}{\sqrt{2}}-1\right)
C. A\left(1-\frac{1}{\sqrt{2}}\right)
D. A\left(\frac{1}{\sqrt{2}}\right)

Correct answer is C.

In 2 \mathrm{~s} (which is equal to \frac{T}{4} ), one amplitude will be convered. In 1 \mathrm{st} second x=a \sin \left(\frac{\pi}{4}\right)=\frac{a}{\sqrt{2}}
Required ratio =\frac{\frac{a}{\sqrt{2}}}{a-\frac{a}{\sqrt{2}}}=\frac{1}{\sqrt{2}-1}