Q17. When a metal surface is illuminated by light of wavelengths 400 nm and 250 nm, the maximum velocities of the photoelectrons ejected are v and 2v respectively. The work function of the metal is:(h = Planck's constant, c = velocity of light in air)Physics — Dawn of Modern Physics — Question 17 of 217A. 2 hc × 106JB. 1.5 hc × 106JC. hc × 106JD. 0.5 hc × 106JPractice more Physics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →