The Total solution for NCERT class 6-12
In an experiment on photoelectric effect,the slope of the cut-off voltage versus frequency of incident light is found tobe 4.12 × 10−15 V s. Calculate the value of Planck’s constant.
The slope of the cut-off voltage (V)versus frequency (ν) of an incident light is given as:
Where,
e = Charge on an electron = 1.6 × 10−19 C
h = Planck’s constant
Therefore, the value of Planck’s constantis