Question

all please if possible

38. Find the radius of curvature of a concave mirror produce an i image at 12 em, putting an object at 6 cm? 39. Calculate the maximum kinetic energy of photoelectrons ejected from a surface of work. function 2.46 eV, when illuminated with light of wavelength 350 nm. of radioactive material of decay constant ()equals to 293 sec1 40. Calculate the half-life (Tin)

Answer 1

33. objeet distomee (u) 6 cm tor a cencoe miror, we howe VDA 12 2- 13. -18 cm R=24c.