An electric bulb illuminates a plane surface. The intensity of illumination on the surface at a point 2m away from the bulb is\[5\,\,\times \,\,{{10}^{-}}^{4}phot\text{ }\left( lumen/c{{m}^{2}}\text{ } \right)\]. The line joining the bulb to the point makes an angle of \[60{}^\circ \] with the normal to the surface. The intensity of the bulb in candela is