The variation of potential energy of harmonic oscillator is as shown in figure. The spring constant is

A. ` 1 xx10^(2) N/m `
B. 150N/m
C. `667 xx 10^(2) N//m`
D. `3 xx 10^(2)` N/m

The variation of potential energy of harmonic oscillator is as shown in figure. The spring constant is

A. `1 xx 10^(2)Nm^(-1)`
B. `1.5 xx 10^(2) Nm^(-1)`
C. `2 xx 10^(2)Nm^(-1)`
D. `3 xx 10^(2)Nm^(-1)`