A perfectly reflecting mirror of mass M mounted on a spring constitutes a spring-mass system of angular frequency such that 4 h = 1024 m with h as Planck's constant. N photons of wavelength = 8 x 10 m strike the mirror simultaneously at normal incidence such that the mirror gets displaced by 1 m. If the value of N is x x 102, then the value of x is [Consider the spring as massless] Light roooooo Mirror