Question

A small metal plate (work function=2ev) is placed at a distance of 2m from a monochromatic light source of wavelength 3.8x 10-7m. If the light falls normally on the o plate, the maximum K.E. of electrons emitted from the plate is 1) 2.021 x 10-19 3) 5.253 x 10-19j 2) 3.253 x 10-193 4) 2.532 x 10-19 J​

Answer 1

I THINK OPTION 3 IS CORRECT

NOT CONFORM

SORRY