AP and TS EAMCET Engineering Model Paper 1

Light rays of wavelengths 6000 A0 and of photon intensity 39.6 Watts/m ‌2 is incident on a metal surface. If only one percent of photons incident on the surface emit photo electrons, then the number of electrons emitted per second per unit area from the surface will be
[Planck constant =6.64×10−34J−S; Velocity of light =3×108ms−1]