Physics-
General
Easy
Question
The graph between 1/
and stopping potential (V) of three metals having work functions 
and 
in an experiment of photo–electric effect is plotted as shown in the figure. Which of the following statement(s) is/are correct ? [Here is the wavelength of the incident ray].
- Ratio of work functions
: 
: = 1 : 2 : 4.
- Ratio of work functions : : = 4 : 2 : 1.
- tan
is directly proportional to hc/e, where h is Planck’s constant and c is the speed of light.
- The violet colour light can eject photoelectrons from metals 2 and 3.
: : = 1 : 2 : 4.
: : = 4 : 2 : 1.
is directly proportional to hc/e, where h is Planck’s constant and c is the speed of light.
The correct answer is: Ratio of work functions : : = 1 : 2 : 4.
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