JEE Main 2025 Physics question
In photoelectric effect, the stopping potential () v/s frequency () curve is plotted. (h is the Planck's constant and is work function of metal) (A) v/s is linear (B) The slope of v/s curve = (C) h constant is related to the slope of v/s line (D) The value of electric charge of electron is not required to determine h using the v/s curve. (E) The work function can be estimated without knowing the value of h. Choose the correct answer from the options given below :
Answer: (3)
Solution
; slope is h/e not φ0/h, so (B) is wrong. (A), (C), (E) are correct; (D) is incorrect since e is needed.